October 7, 2025

Speaker: Mikhail Ivanov (MIT)

Contact Information: 

Title:  Fundamental Cosmology from Galaxy Surveys at Low and High Redshift

Abstract: I will present a program of extracting cosmological information by combining effective field theory (EFT) techniques with data from spectroscopic galaxy surveys. I will highlight previous successes of this program and share recent results, including new measurements of fundamental cosmological parameters and novel constraints on dark energy from the public DESI survey data. I will then discuss the extension of this program to high redshift galaxy clustering and Lyman-alpha forest data, which will be central to the next generation of surveys such as DESI-II and Spec-S5. These surveys will produce the largest and the most precise map of our Universe to date, with the potential for transformative discoveries in cosmology and particle physics. I will demonstrate how EFT techniques address the challenge of precision modeling of high redshift clustering data and I will argue that these techniques will play a major role in the exploration of our Universe at this new frontier of precision cosmology. 

Visitor's room: 123

Visit Schedule:

If you're not meeting in the visitor's office (Room 123), please indicate your office number.

Wednesday:

• 9:30 a.m.:  April Cheng

• 10:00 a.m.:  Justin Myles

• 10:30 a.m.:  (optionally astro-coffee) 

• 11:00 a.m.:  

• 11:30 a.m.:  Matt Coleman (Grand Central or Peyton 123)

• 12:00 p.m.: 

• 12:30 p.m.: Wunch (Grand Central, Peyton 139)

• 1:00 p.m.:  Wunch (Grand Central, Peyton 139)

• 1:30 p.m.: Christian Kragh Jespersen

• 2:00 p.m.: Alex Amon (Peyton 102)

• 2:30 p.m.: Abhishek Hegade 

• 3:00 p.m.: Abhishek Hegade

• 3:30 p.m.: Robert Lupton (Peyton 25D? Near loading dock)

• 4:00 p.m.: Elizabeth Kozlov

• 4:30 p.m.:  Zihan Zhou

Dinner Sign-up - add your name here:

Day of week: Wednesday

1. Faculty Host:  Robert Lupton

2. Postdoc Host: Justin Myles

3.  Christian Kragh Jespersen 

4.  Abhishek Hegade

5. Erfan Nourbakhsh

6.  Nick Loudas

7.  

8.  Speaker

STUDENTS HAVE PRIORITY.

PLEASE NO MORE THAN 8 PEOPLE (it is more difficult to properly interact with the speaker in larger groups).