Internships/Ph.D. new!

Internship and PhD opportunities in 2017-2018

posted Nov 5, 2016, 4:27 AM by Slava Rychkov   [ updated Apr 12, 2017, 12:39 PM ]

UPDATE: The PhD position is filled. I have two interns for the summer and I am not considering further internship application.
M1 interns at the ENS (for projet bibliographique) in the fall of 2018 - feel free to contact me.

I am enthusiastic about spreading the knowledge and educating future generations of theoretical physicists. This is not only an integral part of my job, but also talking to young people helps to move my own research.

I normally accept interns in the last year of studies before PhD (e.g. M2 students in the French system), so that they have some idea about QFT - bread and butter of my research.  I may accept exceptionally qualified interns in the last-but-one year before their PhD (M1 students in the French system).

Location: I share my time between the Ecole Normale Supérieure in Paris and the CERN Theoretical Physics Department in Geneva.
My interns and PhD students are based at one of these two locations.

Funding situation
Internships: accepted interns will be eligible for financial support
PhDPhD candidates having their own funding are invited to contact me.
I will also have one PhD position opening in the Fall of 2017 financed by the Simons Collaboration on the Non-perturbative Bootstrap.
The application has to be done through this website: https://academicjobsonline.org/ajo/jobs/8767
For full consideration, application has to be received before February 15, 2017.

Please accompany any request of PhD or internship by a CV and grade transcripts from attended Master and Bachelor courses. Before applying, take a look at my recent papers on the arXiv and watch my online talks, which are just a google search away. I would like to hear from you what you think about this line of research and why you find it exciting.

Brief description of the research project:

Strongly coupled quantum field theory

Many real systems are described by strongly coupled field theories. Three famous examples are: second-order phase transitions in three-dimensional ferromagnets; quantum chromodynamics (QCD); turbulence. To solve these systems would be a great advance in theoretical physics. My research aims to develop new approaches to these problems.

One method I'm working on is the Conformal Bootstrap, a nonperturbative approach to theories with scale invariance (like in second order phase transitions). You can get an idea reading my recent articles arXiv:1111.2115, arXiv:1203.6064 and arxiv:1403.4545. A few years ago I got the New Horizons in Physics prize for my work on this subject. Simons Foundation has recently funded an international collaboration in this field of research

Another technique is the Truncated Conformal Space Approach, a method which was previously used only in 1+1 dimensions. I'm working to adapt it to the theories in three and four dimensions, such as QCD. The hope is that with this technique one will be able to compute the mass of the proton and of other hadrons on a laptop in a few minutes - the task which now takes years on supercomputers - and with an unprecedented precision. There is a long way to go to fulfill this dream, but we have recently completed the first steps.

I'm looking for very motivated and qualified students to work on these questions. Good understanding of quantum and/or statistical field theory is a must. Knowledge of critical phenomena and conformal invariance would be a plus.


(old) Ph.D./Internship opportunities in 2016

posted Nov 5, 2016, 4:24 AM by Slava Rychkov   [ updated Nov 5, 2016, 4:35 AM ]

I am enthusiastic about spreading the knowledge and educating future generations of theoretical physicists. This is not only an integral part of my job, but also talking to young people helps to move my own research.

I normally accept interns in the last year of studies before PhD (e.g. M2 students in the French system), so that they have some idea about QFT - bread and butter of my research.  I may accept exceptionally qualified interns in the last-but-one year before their PhD (M1 students in the French system).

Funding situation
Internships: accepted interns who spend their internship at CERN are eligible for partial financial support
PhD: I will be moving back to Paris in the fall of 2016 and may have funds for one PhD position.

Please accompany any request of PhD or internship by a CV and grades. Before applying, take a look at my recent papers on the arXiv and watch my online talks, which are just a google search away. I would like to hear from you what you think about this line of research and why you find it exciting.

Brief description of the research project:

Strongly coupled quantum field theory

Many real systems are described by strongly coupled field theories. Three famous examples are: second-order phase transitions in three-dimensional ferromagnets; quantum chromodynamics (QCD); turbulence. To solve these systems would be a great advance in theoretical physics. My research aims to develop new approaches to these problems.

One method I'm working on is the Conformal Bootstrap, a nonperturbative approach to theories with scale invariance (like in second order phase transitions). You can get an idea reading my recent articles arXiv:1111.2115, arXiv:1203.6064 and arxiv:1403.4545. A few years ago I got the New Horizons in Physics prize for my work on this subject.

Another technique is the Truncated Conformal Space Approach, a method which was previously used only in 1+1 dimensions. I'm working to adapt it to the theories in three and four dimensions, such as QCD. The hope is that with this technique one will be able to compute the mass of the proton and of other hadrons on a laptop in a few minutes - the task which now takes years on supercomputers - and with an unprecedented precision. There is a long way to go to fulfill this dream, but we have recently completed the first steps.

I'm looking for very motivated and qualified students to work on these questions. Good understanding of quantum and/or statistical field theory is a must. Knowledge of critical phenomena and conformal invariance would be a plus. 

Ph.D./Internship opportunities in 2015

posted Nov 11, 2014, 12:19 PM by Slava Rychkov

I am enthusiastic about spreading the knowledge and educating future generations of theoretical physicists. This is not only an integral part of my job, but also talking to young people helps to move my own research.

I normally accept interns in the last year of studies before PhD (e.g. M2 students in the French system), so that they have some idea about QFT - bread and butter of my research.  I may accept exceptionally qualified interns in the last-but-one year before their PhD (M1 students in the French system).

Funding situation
Internships: accepted interns who spend their internship at CERN are eligible for partial financial support
PhD: CERN does not usually provide Ph.D. fellowships, so normally I only consider candidates who have other sources of funding. For example, students with fellowships from French Ecoles Doctorales, or graduates from les Grandes Ecoles. Students in the French system could be attached to LPT ENS but stay physically at CERN. However, in 2015 we may, exceptionally, be able to award up to 2 PhD contracts, thanks to Swiss funding.

Please accompany any request of PhD or internship by a CV and grades. Before applying, take a look at my recent papers on the arXiv and watch my online talks, which are just a google search away. I would like to hear from you what you think about this line of research and why you find it exciting.

Brief description of the research project:

Strongly coupled quantum field theory

Many real systems are described by strongly coupled field theories. Three famous examples are: second-order phase transitions in three-dimensional ferromagnets; quantum chromodynamics (QCD); turbulence. To solve these systems would be a great advance in theoretical physics. My group at the theory department at CERN (where I'm on a long term leave from LPT ENS) develops new approaches to these problems.

One method we are working on is the Conformal Bootstrap, a nonperturbative approach to theories with scale invariance (like in in second order phase transitions). You can get an idea reading my recent articles arXiv:1111.2115, arXiv:1203.6064 and arxiv:1403.4545. I recently got the New Horizons in Physics prize for my work on this subject.

Another technique is the Truncated Conformal Space Approach, a method which was previously used only in 1+1 dimensions. We are working to adapt it to the theories in three and four dimensions, such as QCD. The hope is that with this technique one will be able to compute the mass of the proton and of other hadrons on a laptop in a few minutes - the task which now takes years on supercomputers - and with an unprecedented precision. There is a long way to go to fulfill this dream, but we have recently completed the first steps in this paper.

I'm looking for very motivated and qualified students to work these questions. Good understanding of quantum and/or statistical field theory is a must. Knowledge of critical phenomena and conformal invariance would be a plus. 

PhD opportunity starting in the fall of 2014

posted Oct 21, 2013, 2:27 PM by Slava Rychkov   [ updated May 30, 2014, 10:47 AM ]

CERN does not usually provide Ph.D. fellowships, so normally I only consider candidates who have other sources of funding. For example, students with fellowships from French Ecoles Doctorales, or graduates from les Grandes Ecoles. Students in the French system could be attached to LPT ENS but stay physically at CERN.

In addition, this year we will have an opening for one funded position:

30/5/2014 PhD position in QFT/strings at CERN Theory Department - DEADLINE EXTENDED

CERN Theory Group is member of the NCCR Swissmap Program "The Mathematics of Physics" and will support under this umbrella one full-time (3 years) PhD position in the field of formal QFT/string theory, starting in Fall 2014. Successful candidate will be doing research under the guidance of one of members of CERN QFT/string theory group (Ignatios Antoniadis, Wolfgang Lerche, Luis Alvarez-Gaume, James Drummond, Kyriakos Papadodimas, Boris Pioline, or myself). He or she will be enrolled in an official PhD program at a participating Swiss University, such as University of Geneva, since CERN is not a degree-granting institution. 

If you are interested in doing PhD with me on the subject of strongly coupled/conformal quantum field theory (see project description here) please send to my email an application, including a CV and grades, and two letters of recommendations should be sent confidentially in separate emails. If you think you are interested in doing it with someone else from the above list, please contact Kyriakos Papadodimas <kyriakos DOT papadodimas AT cern DOT ch>

Deadline for applications is May 15, 2014. The deadline has been extended - if you see this announcement, it means the position is still open.

Théorie quantique des champs fortement couplée (English version below)

Plusieurs systèmes réels sont décrits par des théories des champs fortement couplées. Voilà trois exemples célèbres: transitions de phases du second ordre dans les ferromagnétiques en trois dimensions; chromodynamique quantique (QCD); turbulence. Résoudre ces systèmes serait une grande avance dans la physique théorique. Mon groupe de recherche au département théorique du CERN (où je suis en détachement de longue durée du LPT ENS) travaille sur des nouvelles approches à ce problème.

Un méthode que nous développons est le Bootstrap Conforme, une approche non-pérturbative à des théories avec l'invariance d'échelle (comme à une transition de phases du second ordre). On peut en avoir une idée en lisant mes articles récents arXiv:1111.2115, arXiv:1203.6064 et arxiv:1403.4545. J'ai gagne récemment le prix New Horizons in Physics pour mon travail sur se sujet.

Un autre méthode est le Truncated Conformal Space Approach, une technique qui n'a été utilisée auparavant qu'en 1+1 dimension. Nous travaillons pour l'adapter à des théories dans trois, et quatre dimensions, comme la QCD. On espère qu'avec cette technique, il sera possible de calculer la masse de proton et des autres hadrons sur portable en quelques minutes – un calcul qui maintenant prends des années avec un superordinateur – et avec une précision sans précédent.

Je cherche donc un(e) étudiant(e) très motivé(e) et qualifié(e) pour travailler sur une thèse liée à ces questions. Une bonne compréhension de la théorie quantique et/ou statistique des champs est nécessaire. Des connaissances des phénomènes critiques et de l'invariance conforme seraient un atout. 

Les demandes doivent être accompagnés par un CV et un relevé de notes.

Strongly coupled quantum field theory

Many real systems are described by strongly coupled field theories. Three famous examples are: second-order phase transitions in three-dimensional ferromagnets; quantum chromodynamics (QCD); turbulence. To solve these systems would be a great advance in theoretical physics. My group at the theory department at CERN (where I'm on a long term leave from LPT ENS) develops new approaches to these problems.

One method we are working on is the Conformal Bootstrap, a nonperturbative approach to theories with scale invariance (like in in second order phase transitions). You can get an idea reading my recent articles arXiv:1111.2115, arXiv:1203.6064 and arxiv:1403.4545. I recently got the New Horizons in Physics prize for my work on this subject.

Another technique is the Truncated Conformal Space Approach, a method which was previously used only in 1+1 dimensions. We are working to adapt it to the theories in three and four dimensions, such as QCD. The hope is that with this technique one will be able to compute the mass of the proton and of other hadrons on a laptop in a few minutes - the task which now takes years on supercomputers - and with an unprecedented precision.

I'm therefore looking for a very motivated and qualified student to work on a thesis related to these questions. Good understanding of quantum and/or statistical field theory is a must. Knowledge of critical phenomena and conformal invariance would be a plus. 

Application must include a CV and grades.

Ph.D. possibility starting in the fall 2013

posted Dec 12, 2012, 4:14 AM by Slava Rychkov   [ updated Dec 12, 2012, 4:15 AM ]

I am looking for a highly motivated and qualified candidate for a Ph.D. on Conformal Field Theories and their applications to high energy physics and condensed matter. Prior knowledge of Quantum Field Theory is a prerequisite. Basic knowledge of theory of critical phenomena and/or conformal field theory techniques is a plus. The Ph.D. student will be based at the CERN Theory Division (where I am currently on a leave of absence until 2017). 

N.B. CERN does not provide Ph.D. fellowships, so only candidates who have other sources of funding can be considered.
For example, students with fellowships from French Ecoles Doctorales, or graduates from les Grandes Ecoles.

Sujets de stage/thèse 2011/2012

posted Sep 27, 2011, 2:18 PM by Slava Rychkov   [ updated Oct 4, 2011, 11:22 AM ]

Pour les étudiants dans le système Francais:
Théorie quantique des champs en Physique des hautes énergies et Physique statistique

Je serai heureux d'encadrer un(e) étudiant(e) intéressé par un des sujets suivants, qui sont au centre de mes recherches actuelles:
- Brisure de la symétrie électrofaible; physique du boson de Higgs
- La physique des champs quantiques fortement couplés; invariance conforme et ses applications
- La physique au Grand Collisionneur des Hadrons (LHC)
- La physique théorique des particules au-delà du Modèle Standard

Si vous cherchez un stage, envoyez-moi un email et nous allons essayer de trouver un problème correspondant a vos intérêts. Accompagner votre demande de votre CV et vos notes detaillés (Master,Licence). 
Si vous cherchez une thèse, je vous demanderai en plus deux lettres de recommandation. (Ces lettres peuvent etre envoyés directement a mon courriel)

For students outside France:
Quantum Field Theory in High Energy Physics and Statistical Physics 

I may accept for an internship/thesis a student from outside France, who is interested in one of the following subjects which are in the focus of my current research:
- electroweak symmetry breaking; Higgs boson physics
- physics of strongly interacting quantum fields; conformal invariance and its applications
- physics at the Large Hadron Collider
- theoretical particle physics beyond the Standard Model

Please note that, unfortunately, our department does not provide fellowships for internships. Candidates for an internship (with their own funding) should accompany their application by the CV and a detailed grade transcript (Master, Licence), which should include standing in the class (e.g. 1st out of 100 students etc). 

We have a very limited number of PhD fellowships for outstanding candidates from abroad. Candidates for a PhD thesis should accompany the application by the CV and a detailed grade transcript (Master, Licence), which should include standing in the class (e.g. 1st out of 100 students etc). They should also ask for two professors to send a letter of recommendation on their behalf to my email address. This concerns both candidates with their own funding and especially candidates for French funding.

See also here a guide for foreign students looking to do a PhD in France.

Sujet de stage automne 2010- printemps 2011

posted Sep 8, 2010, 1:44 PM by Slava Rychkov   [ updated Sep 8, 2010, 1:48 PM ]

Sujet de stage de recherche de master (M2) posté sur le site du master Concepts fondamentaux de la physique

Théorie conforme des champs en quatre dimensions 

La symétrie conforme joue un rôle très important dans la physique théorique. Elle apparaît dans la théorie des phénomènes critiques, dans la physique des particules, dans les approches modernes à la gravité quantique, etc. 

Dans ce stage, l'étudiant(e) se familiarisera avec la théorie conforme des champs en quatre dimensions, le cas pertinent pour la physique des particules. 

Pour commencer, il(elle) va étudier les conséquences de la symétrie conforme pour les dimensions et les fonctions de corrélation des opérateurs locaux. Il(elle) apprendra des techniques importantes comme le développement en produit d'opérateurs et les blocs conformes. 

Puis, l'étudiant(e) sera en mesure d'appliquer les connaissances acquises à un problème de recherche concret: l'étude de la force d’interaction maximale possible dans une théorie conforme des champs (avec possibilité de publication). 

Ce stage peut déboucher sur une thèse de doctorat.

Guide for Ph.D. candidates

posted May 23, 2010, 11:10 AM by Slava Rychkov   [ updated May 23, 2010, 11:11 AM ]

See the guide http://www.phys.ens.fr/~troost/guidance.html composed by Jan Troost

Sujet de thèse 2010

posted Jan 14, 2010, 3:13 PM by Slava Rychkov   [ updated Jan 14, 2010, 4:03 PM ]

Sujet de thèse de doctorat posté sur le site de l'ED107

La rupture de symétrie électrofaible 

et la physique au-delà du Modèle Standard au LHC


Le doctorant va collaborer avec le directeur de thèse sur des problèmes d'intérêt actuel pour la physique théorique des particules au-delà du Modèle Standard (BSM) à l'échelle d'énergie du TeV, en particulier sur la physique de la rupture de symétrie électrofaible (EWSB) et des particules de la matière noire.

Le grand collisionneur de hadrons (LHC) du CERN va bientôt produire des données importantes pour ce domaine de recherche. En 2010-2014 le LHC devrait atteindre son énergie nominale de ~ 14 TeV et une luminosité intégrée jusqu'à 10 fb-1. Cela suffit pour découvrir le boson de Higgs standard (s’il existe), et pour sonder des nombreux modèles existants de la physique BSM.

La recherche prévue comprendra des travaux sur la phénoménologie des secteurs du Higgs étendus, de la supersymétrie, des bosons de Higgs composés, des modèles EWSB fortement couplés et conformes, etc. Un des buts envisagés sera de prédire des signaux expérimentaux des modèles BSM pour les chercher au LHC ; un autre, de réagir aux données du LHC et de construire des modèles qui en expliquent les découvertes

Sujet de stage 2010

posted Nov 9, 2009, 12:50 PM by Slava Rychkov   [ updated Nov 9, 2009, 2:10 PM ]

Sujet de stage de recherche de master (M2) posté sur le site du master Concepts fondamentaux de la physique

Théorie du LHC : production du boson de Higgs
et diffusion des bosons W longitudinaux 


Avec le LHC, un nouvel âge commence dans la physique des particules. Pour la première fois, on pourra explorer directement des énergies plus grandes que l’échelle de Fermi. Dans toute probabilité, cela portera à la découverte de nouvelles particules (boson de Higgs, matière sombre), ou de nouvelles symétries (supersymétrie), ou bien de nouvelles interactions (Technicouleur). Le mécanisme de la rupture de symétrie électrofaible sera finalement clarifié. On aura besoin de théoricien(ne)s pour interpréter les découvertes expérimentales. 

Dans ce stage, l'étudiant(e) se familiarisera avec les principaux thèmes théoriques liés au programme de LHC. Pour commencer, l'étudiant(e) étudiera la théorie de la production et de l'observation du boson de Higgs au LHC. Le couplage direct entre le boson de Higgs et les quarks constituants des protons est très faible. Cependant, le boson de Higgs peut être produit dans les collisions entre les constituants gluoniques (ce couplage est produit par les corrections quantiques), et dans des collisions de bosons W et Z rayonnés par les quarks. 

En plus, l'étudiant(e) s'occupera de la théorie de la diffusion WW->WW, où les bosons W initiaux sont à nouveau rayonnés par les quarks constituants. Ce sera un processus important à étudier, si le boson de Higgs n'existe pas. Dans de tels scénarios (dont Technicouleur est un bon exemple) les W longitudinaux interagissent fortement à l'échelle de l'énergie CM de 2-3 TeV.

Ce stage peut déboucher sur une thèse de doctorat.

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