I will explain how the S-matrix Bootstrap for massless particles can be used to constrain the space of Effective Field Theories (EFT). In particular, I will discuss the S-matrix bootstrap for massless particles in unitary, relativistic two dimensional quantum field theories.

# Events Archive

## Events Archive

### High Energy Theory | Joao Penedones, EPFL | "S-matrix Bootstrap for Effective Field Theories"

### Physics Group Meeting | "Title to be announced." | Bloomberg Hall Physics Library

### Biophysics Seminar: Paul Francois, McGill University: Geometric model in latent space for fly development|Joseph Henry Room

### The Gravity Initiative Opening Celebration, Robbert Dijkgraaf, Director | IAS "Einstein’s Dream — From the Big Bang to Black Holes"

**Abstract:** We are living in the golden era of gravitational research, realizing Einstein’s vision that by studying the geometry of space and time we can determine the origin, composition, and fate of the Universe.

### Hamilton Colloquium Series, Sheperd S. Doeleman, Center for Astrophysics | Harvard & Smithsonian, "The Event Horizon Telescope: Imaging a Black Hole"

The Event Horizon Telescope (EHT) is a Very Long Baseline Interferometry (VLBI) array operating at the shortest possible wavelengths, which can resolve the event horizons of the nearest supermassive black holes.

### The Gravity Initiative Opening Celebration | November 7-8, 2019

### Pheno & Vino Seminar | Brandon Melcher, Syracuse | "Co-Decaying Dark Matter and its Cosmological Signatures" | Jadwin 303

This talk will follow the discussions found in https://arxiv.org/abs/1711.04773 and https://arxiv.org/abs/1902.04082.

### HET Seminar | Callum Jones, U of Michigan | "Born-Infeld Electrodynamics at One-Loop” | Jadwin A06

The Born-Infeld model is an effective field theory of central importance describing the low-energy dynamics of massless gauge bosons on the world-volume of D-branes. Though it is in many ways an exceptional model of nonlinear electrodynamics, several aspects of the physics of the Born-Infeld model remain mysterious.

### High Energy Theory | Jacobus Verbaarschot, Stony Brook | "Chaotic and Thermodynamic Properties of two Coupled Sachdev-Ye-Kitaev Models" | PCTS Seminar Room 407

The SYK Model was originally introduced as a random matrix model for the nuclear interaction that also describes the exponential rise of the spectral density known as the Bethe formula.

### Biophysics Seminar: Ashley Carter, Amherst College: DNA Folding in Sperm|Joseph Henry Room

**DNA Folding in Sperm**

### Gravity Initiative Lunch, Barak Zackay | IAS "Detecting Gravitational Waves With Disparate Detector Responses: Two New Binary Black Hole Mergers"

Abstract:

I will describe our continuing work for extracting the most of the LIGO-VIRGO data.

In this talk, I will discuss the process that was used to characterize the impact of non-Gaussian phenomena (so called 'Glitches')

I will then discuss the process that exploited the found properties in order to rank candidates...

### Physics Group Meeting | Nafiz Ishtiaque, IAS | “Topological Holography” | Bloomberg Hall Physics Library

We consider supersymmetric twist and omega deformation of a type IIB brane setup involving N D3 and K D5 branes. In the large N limit, this leads to a holographic duality between two topological/holomorphic theories. We compute certain operator algebras from both sides of this topological holographic duality and find the result consistent with...

### Math Physics | Martin Fraas, Virginia Tech | "A many-body Fredholm index for ground state spaces and Abelian anyons" | Jadwin A06

We propose a many-body index that extends Fredholm index theory to many-body systems. The index is defined for any charge-conserving system with a topologically ordered p-dimensional ground state sector. The index is fractional with the denominator given by p.

### HET Seminar | Tom Hartman, Cornell University | "Dynamical Constraints on RG Flows and Cosmology” | Bloomberg Lecture Hall

I will discuss time-dependent probes of the renormalization group, and derive new constraints that govern the spread of local operators in holographic theories. The same methods lead to sum rules for inflationary correlators, relating observables, like the speed of sound during inflation, to properties of the UV theory.

### FPO - Amanda Stevie Bergman - "Commissioning the Spider-2 Instrument and Spider-1 Low-Level Analysis"

The SPIDER instrument is a balloon-borne polarimeter designed to measure the primordial *B*-mode polarization in the cosmic microwave background (CMB). Theories of the very early universe predict that physical processes in the first fraction of a second after the Big Bang sourced large gravitational waves.

### Gravity Group Lunch Seminar, Corwin Shiu | Princeton "A design of a wideband 30/40 GHz diplexed camera suitable for BICEP Array"

**Abstract:** Accurate understanding of astrophysical foregrounds is crucial in recovering the underlying CMB signal. In this talk I will discuss the design and performance of a camera that will be powerful at characterizing synchrotron emissions. The camera is comprised of slotted bowtie antenna elements coherently summed in a...

### Physics Group Meeting at IAS | Robert Penna, IAS | “The Geroch Group” | Bloomberg Hall Physics Library

We review some infinite dimensional symmetries that appear indimensionally reduced classical general relativity.

### Physics Group Meeting at IAS | Robert Penna, IAS | “The Geroch Group” | Bloomberg Hall Physics Library

We review some infinite dimensional symmetries that appear indimensionally reduced classical general relativity.

### Math Physics Seminar | Michael Aizenman, Princeton | ``Geometric analysis of frustration in a class of SU(2S+1) invariant quantum spin chains’’ | Jadwin A06

PLEASE NOTE THIS TALK FROM 10/8 HAS BEEN RESCHEDLED TO 10/22/2019 -- THANK YOU!

### Pheno & Vino Seminar | Marat Freytsis, Rutgers | "Functional methods and universal one-loop matching in HQET and beyond" | Jadwin 303

Functional methods, in particular efficient reorganization of the one-loop effective action, have recently made a reappearance in simplifying the problem of computing matching and running effects in Lorentz-invariant effective field theories (EFTs) such as the Standard Model Effective Field Theory.