Research & Talks

My papers are available at https://inspirehep.net/authors/1904000?ui-citation-summary=true. Research area-wise papers are listed below.

Holographic QCD from a Top-Down Approach

We are exploring the intermediate coupling regime of thermal QCD from a top-down approach. The gravity dual of thermal QCD is M-theory inclusive of O(R^4) Corrections. 

Publications

1. Gopal Yadav, Shivam Singh Kushwah and Aalok Misra, "Pole-Skipping and Chaos in Hot MQCD," JHEP 05 (2024) 015 [arXiv:2311.09306].

2. Aalok Misra and Gopal Yadav, "QCD-Compatible Supermassive Inert Top-Down Holographic Mesinos at Intermediate Coupling,"  Phys. Rev. D 108 (2023) 10, 106013 [arXiv:2308.05033].

3. Aalok Misra and Gopal Yadav, "(Almost) Contact (3) (Metric) Structure(s) and Transverse SU(3) Structures Associated with M-Theory Dual of Thermal QCD at Intermediate Coupling," arXiv:2211.13186.

4. Gopal Yadav, "Deconfinement temperature of rotating QGP at intermediate coupling from M-theory," Phys. Lett. B 841 (2023) 137925 [arXiv:2203.11959]. 

5. Gopal Yadav, Vikas Yadav and Aalok Misra, "ℳcTEQ (ℳ chiral perturbation theory-compatible deconfinement Temperature and Entanglement Entropy up to terms Quartic in curvature) and FM (Flavor Memory),"  JHEP 10 (2021) 220 [arXiv:2108.05372].

6. Vikas Yadav, Gopal Yadav and Aalok Misra, "(Phenomenology/Lattice Compatible) SU(3) MᵡPT HD up to O(p^4) and the O(R^4)-Large-N Connection,"  JHEP 08 (2021) 151 [arXiv:2011.04660].

Information Paradox

Hawking pointed out that black holes do not follow the unitary evolution of quantum mechanics and this leads to the famous "information paradox". This paradox has been resolved using the island proposal, doubly holographic setup and wedge holography. We have used these proposals to address various issues in the information paradox. 

Publications

1. Gopal Yadav and Hemant Rathi, "Yang-Baxter Deformed Wedge Holography," Phys. Lett. B 852 (2024) 138592 [arXiv:2307.01263]. [we also discussed holographic complexity of Yang-Baxter deformed AdS2 background in this paper] 

2. Gopal Yadav and Nitin Joshi, "Cosmological and black hole islands in multi-event horizon spacetimes," Phys. Rev. D 107 (2023) 2, 026009 [arXiv:2210.00331].

3. Gopal Yadav and Aalok Misra, "Entanglement entropy and Page curve from the M-theory dual of thermal QCD above T_c at intermediate coupling," Phys. Rev. D 107 (2023) 10, 106015 [arXiv:2207.04048]. [this work connects holographic QCD and information paradox]

4. Gopal Yadav, "Page curves of Reissner-Nordström black hole in HD gravity,"  Eur. Phys. J. C 82 (2022) 904 [arXiv:2204.11882].

Multiverse

I am interested in Multiverse. In this direction, I applied wedge holography to construct the multiverse models within Braneworld where the bulk geometry is anti de-Sitter and de-Sitter. 

Publications

1. Gopal Yadav, "Communicating multiverses in a holographic de Sitter braneworld," Phys.Rev.D 110 (2024) 2, 026028 [arXiv: 2404.00763]. [this work also has application in de-Sitter holography: this provides correspondence between de-Sitter gravity in d-dimensions and (d-2)-dimensional CFT]

2. Gopal Yadav, "Multiverse in Karch-Randall Braneworld,"  JHEP 03 (2023) 103 [arXiv: 2301.06151]. [this work also has application in information paradox]

Holographic Complexity

We are using various holographic proposals to study complexity. Recently, we applied "complexity  equals volume" proposal to probe the cosmological singularities.

Publications

1. K. Narayan, Hitesh K. Saini, Gopal Yadav, "Cosmological singularities, holographic complexity and entanglement," JHEP 07 (2024) 125, [arXiv:2404.00761].  

de Sitter Holography

Recently, I started working on de Sitter holography. We are using the quantum information theoretic tools to probe the de Sitter space and its holographic dual theory. The first paper I wrote in de Sitter holography is already mentioned in the “Multiverse” section.

Publications

1. Kaberi Goswami, K. Narayan, Gopal Yadav, "No-boundary extremal surfaces in slow-roll inflation and other cosmologies,"  [arXiv:2409.14208].  

Talks and Poster Presentations

Talks: I have delivered the talks at the following conferences/workshops.

1. "Probing the holographic cosmological singularities with complexity and entanglement", Chennai Strings Meeting 2024, The Institute of Mathematical Sciences, Chennai, India, November 07, 2024. [talk file] (invited talk)

2. "Wedge holography in de Sitter space and its application to the Multiverse model", Entanglement Meeting, Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto, Japan, October 30, 2024. [talk file] (invited talk)

3. "Complexity in holographic cosmologies", Quantum Information, Quantum Field Theory and Gravity, August 29, 2024. [talk file]

4. "Communicating Multiverses in Holographic de-Sitter Braneworld",  Cosmology from Home 2024, June 20, 2024. [talk file] [video link]

5. "Communicating Multiverses in Holographic de-Sitter Braneworld",  Gravtalks (journal club), Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile, April 12, 2024. [talk file] (invited talk)

6. "(Holographic) Approaches to Resolve the Information Paradox", Swansea Theory Seminars (Particle Theory and Cosmology Group), Swansea University, Swansea, UK, December 04, 2023.  [talk file]

7. "Multiverse in Karch-Randall Braneworld", Physics Seminar, Chennai Mathematical Institute, Chennai, India, November 23, 2023. [talk file]

8. "Holography and Its Application to QCD and Information Paradox", department of physics, Banaras Hindu University, Varanasi, India, July 25, 2023. [talk file]

9. "Page Curves of Black Holes in Higher Derivative Theories of Gravity, Cosmological Island and Multiverse", Shivalik HEPCATS winter 2023, Indian Institute of Technology Mandi, Mandi, Himachal Pradesh, India, January 27, 2023. [talk file]

10. "Page Curves of Black Holes in Higher Derivative Theories of Gravity and Cosmological Islands", New Trends in Mathematical Physics 2022, Steklov Mathematical Institute of Russian Academy of Sciences, Moscow, Russia, November 11, 2022. [talk file] [video link] (invited talk)

11. "Deconfinement Phase Transition in Thermal QCD at Intermediate Coupling from M Theory", 27th International Symposium on Particles, Strings and Cosmology (PASCOS) 2022, Max Planck Institute for Nuclear Physics, Heidelberg, Germany, July 28, 2022. [talk file]

12. "Page Curve of an Eternal Black Hole in M-Theory Dual of High-Temperature QCD at Intermediate Coupling", Gravity: Current challenges in black hole physics and cosmology, Yukawa Institute for Theoretical Physics (YITP), Kyoto University, Kyoto, Japan, June 22, 2022(via Zoom). [talk file]

13. "Page Curves of Reissner-Nordström Black Hole in HD Gravity", Atlantic General Relativity 2022, Memorial University of Newfoundland and Labrador, Canada, May 19, 2022(via Zoom). [talk file]

14. "Deconfinement Phase Transition from Entanglement Entropy", Research Scholars' Day, Department of Physics, Indian Institute of Technology Roorkee, Roorkee, India, March 23, 2022. [talk file]

15. "Deconfinement Phase Transition from Entanglement Entropy and M$\chi$PT Compatibility", Shivalik HEPCATS - 2021  [Winter], Indian Institute of Science Education and Research Mohali, India, December 18, 2021(via Zoom). [talk file]

16. "UV-IR Mixing and M$\chi$PT-Compatible Non-Renormalization of  T_c up to O(R^4) from M Theory", Shivalik HEPCATS - 2021 [Summer], Indian Institute of Technology Ropar, Ropar, India, July 31, 2021(via Webex). [talk file]

17. "Towards ChPT Lagrangian from M Theory", Shivalik HEPCATS Meeting Winter 2020, Indian Institute of Science Education and Research Mohali, India, Jan 30, 2021(via Zoom). [talk file]

Poster Presentations: Details of the poster presentations is given below.

1. Poster presentation titled "Probing the holographic cosmological singularities with complexity and entanglement" in the workshop Quantum Extreme Universe: Matter, Information, and Gravity, held at the Okinawa Institute of Science and Technology (OIST) Graduate University, Okinawa, Japan for the period October 21 - 25, 2024. [poster]

2. Poster presentation titled "Yang-Baxter Deformed Wedge Holography" in the event Bridges between holographic quantum information and quantum gravity, held at the Isaac Newton Institute for Mathematical Sciences, Cambridge, UK for the period November 27 - December 01, 2023. [poster]

3. Poster presentation titled "Information Paradox of Black Holes in Higher Derivative Theories of Gravity, Cosmological Islands, and Multiverse" in the event Holography@25, held at the International Centre for  Theoretical Physics-South American Institute for Fundamental Research (ICTP-SAIFR), Sao Paulo, Brazil for the period June 05 - 17, 2023 (school: June 05 - 13, 2023, workshop: June 14 - 17, 2023). [poster]

4. Poster presentation titled "Information Paradox, It's Resolution from Holography, and Multiverse" on Institute Research Day 2023 at the Indian Institute of Technology Roorkee, Roorkee, India, March 13, 2023. [poster]

5. Online poster presentation titled "Page Curves of Reissner-Nordström Black Hole in HD Gravity" in the workshop Quantum extreme universe from quantum information at the Yukawa Institute for Theoretical Physics (YITP), Kyoto University, Kyoto, Japan, September 26, 2022. [poster]

6. Poster presentation titled "Strong Interaction at Intermediate Coupling from String/M Theory" on Institute Research Day 2022 at the Indian Institute of Technology Roorkee, Roorkee, India, March 13, 2022. [poster]