Archive of IAS Monday High Energy Theory Seminars

Dec
16
2024

IAS High Energy Theory Seminar

Holographic Cosmology in 2+1 Dimensions
Alexander Maloney
2:30pm|Bloomberg Lecture Hall (IAS) & Zoom

Abstract: In the search for simple, solvable models of quantum cosmology it is useful to focus on general relativity in 2+1 dimensions, where - due to the absence of local degrees of freedom - there is some hope that we can say something precise.  I...

Nov
25
2024

IAS High Energy Theory Seminar

The Path to an Energy Frontier Muon Collider
Mark Palmer
2:30pm|Bloomberg Lecture Hall (IAS) & Zoom

Abstract: Muon colliders offer a unique path to multi-TeV, high-luminosity lepton collisions. Muon collisions with a center-of-mass energy of 10 TeV or above would offer significant discovery potential where the constituent collision energies exceed...

Nov
18
2024

IAS High Energy Theory Seminar

Matroids and Amplitudes
Thomas Lam
2:30pm|Wolfensohn Hall & Zoom

Abstract: Matroids are combinatorial abstractions of the notion of linear independence. They are one of the main objects studied in the current special year in the School of Mathematics. I will talk about a notion of scattering amplitudes for...

Oct
28
2024

IAS High Energy Theory Seminar

Cosmological Tensions and Dark Sectors to Explain Them
Martin Schmaltz
2:30pm|Bloomberg Lecture Hall (IAS) & Zoom

Abstract: This talk will discuss what's new with some of the most interesting looking cosmological tensions: the Hubble tension, the growth of structure tension (S8, growth rate, Lyman Alpha) and Big Bang Nucleosynthesis (Lithium and Deuterium)...

Oct
14
2024

IAS High Energy Theory Seminar

Candidate de Sitter Vacua
Richard Nally
2:30pm|Bloomberg Lecture Hall (IAS) & Zoom

Abstract: We construct compactifications of type IIB string theory that yield, at leading order in the α ′ α ′ and g s g s expansions, de Sitter vacua of the form envisioned by Kachru, Kallosh, Linde, and Trivedi. We specify explicit Calabi-Yau...

Apr
22
2024

IAS High Energy Theory Seminar

" “Unnecessary” Quantum Critical Points in Condensed Matter and Field Theory"
Senthil Todadri
2:30pm|Bloomberg Lecture Hall (IAS) & Zoom

Abstract: Quantum critical points usually separate two distinct phases of matter. Here I will discuss a class of "unnecessary" quantum critical points that lie within a single phase of matter (much like the liquid-gas transition, except that they...

Apr
15
2024

IAS High Energy Theory Seminar

Staggered Bosons, Kahler Dirac Bosons and Supersymmetry on the Lattice
David Berenstein
2:30pm|Bloomberg Lecture Hall (IAS) & Zoom

Abstract: I will describe constructions of lattice field theories that assign a single bosonic variable to each site, rather a conjugate pair x,p. The information to realize a non-trivial dynamics is realized by non-trivial Poisson brackets between...

Mar
11
2024

IAS High Energy Theory Seminar

Superstring Partition Functions in AdS3
Mukund Rangamani
2:30pm|Bloomberg Lecture Hall (IAS) & Zoom

Abstract: I will describe the one-loop partition function for strings propagating on AdS3 geometries with NS-NS flux (for generic values of AdS radius in string units). The essential ingredients that go into this analysis have been known for a while...

Feb
12
2024

IAS High Energy Theory Seminar

Semi-Classical Physics at Large Quantum Numbers
Zohar Komargodski
2:30pm|Bloomberg Lecture Hall (IAS) & Zoom

Abstract: We will discuss excitations with large spin and/or large particle number. For conformal theories this corresponds to investigating particular trajectories of heavy operators. 

We find trajectories with large approximate degeneracy and show...