October 31, 2023

Speaker: Nikhil Padmanabhan (Yale University)

Contact Information: nikhil.padmanabhan@yale.edu

Title: Baryon Acoustic Oscillations with Galaxy Surveys: Present State and Some Future Prospects 

Abstract: I will weave three separate threads. The first will be to describe recent and ongoing results from the Dark Energy Spectroscopic Survey. I will present the BAO results from the early DESI data, and some of the preparatory work for the Year 1 data. I will then present a new approach to reconstruction based on optimal transport, highlighting some recent results and ideas for future applications. I will end by discussing merging perturbative reconstruction ideas with convolutional neural networks, and a possible new application to primordial non-gaussianity.

Visitor's room: 103A 

Visit Schedule:

Wednesday (November 1, 2023):

• 9:30 a.m.:  Michael Strauss (113 Peyton)

• 10:00 a.m.:  Jeremy Goodman (129 Peyton)

• 10:30 a.m.: 

• 11:00 a.m.: Jo Dunkley (103A)

• 11:30 a.m.: Alice Pisani (103A)

• 12:00 p.m.: Wunch

• 12:30 p.m.: Wunch

• 1:00 p.m.: 

• 1:30 p.m.: RHL (near Loading Dock)

• 2:00 p.m.: He Jia (013 Peyton)

• 2:30 p.m.: Alex Amon (102 Peyton)

• 3:00 p.m.:  Jenny Greene (001)

• 3:30 p.m.:  Neta Bahcall (137 Peyton)

• 4:00 p.m.:  Jim Gunn (025G Peyton)

• 4:30 p.m.:  Mariangela Lisanti (103A Peyton)

• 5:00 p.m.: ChangHoon Hahn (zoom: https://lbnl.zoom.us/j/3447870753)

• ~6:10 p.m: Gather for dinner

Dinner Sign-up - add your name here:

Wednesday (November 1, 2023) [Mezzaluna]

1. Faculty Host: Robert Lupton 

2. Postdoc Host: Yubo Su (happy to vacate if more students are interested!)

3. He Jia

4.  Lena Treiber

5.  Jared Siegel

6.  Zachary Andalman

7. Alex Amon

8.  Yue Pan

STUDENTS HAVE PRIORITY.

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