I will review recent progress in understanding perturbative corrections to the large N limit of various observables in holographic 3d SCFTs. For supersymmetric observables, these corrections are obtained from supersymmetric localization and can be used to infer the value of higher-derivative couplings in the dual…

In electrostatic terminology, an electrical field of a stationary point process is a vector field whose distributional divergence is equal to the counting measure of the point process minus the Lebesgue measure. In the talk we will give a simple answer to the following question: when does a planar stationary point process generate a stationary…

The irreversibility of RG flows on conformal defects has been a subject of great interest recently. In this talk I will present an entropy function defined on 2D spherical defects, interpolating between the defect anomaly coefficient at the fixed points. We reproduce the IR sum-rule proving irreversibility and show…

For certain black hole spacetimes, we are fortunate to have three complementary views of the same physics: (1) the low-energy gravity theory on the spacetime M, (2) worldsheet string theory with target space M, and (3) a holographic description living on the boundary of M. In this talk, I describe ongoing efforts to compare these perspectives…

Infectious disease-causing pathogens have plagued humanity since antiquity, and the COVID-19 pandemic has been a vivid reminder of this perpetual existential threat. Vaccination has saved more lives than any other medical procedure, and effective vaccines have helped control the COVID-19 pandemic. However, we do not have effective vaccines…

The towers of massive states in quantum gravity are ubiquitous and highly constrained. I will review some of the Swampland conjectures, known as distance conjectures, that quantify the universal behaviors of such towers in string theory. Due to the strong implications of distance conjectures, connecting them to more fundamental principles…

I will showcase the computation of the next-to-leading order scattering waveform in classical gravity using amplitude techniques. I will first give an overview of how to compute generic classical observables in gravity using scattering amplitude techniques in the KMOC formalism. In particular, I will…

- Bill BialekAffiliationPrinceton University
- Josh ShaevitzAffiliationPrinceton University

I will start with some comments about the theoretical and experimental status of conformal invariance in critical phenomena, first proposed by A. Polyakov in 1970. I will then focus on a couple of experimentally significant models of statistical physics (ferromagnets in presence of strong dipolar forces, fluctuating…

I will discuss the obstacles I have experienced as a female, non-native English speaker, and a first-generation college student with an F-1 visa enrolled in a PhD program in the US. I will give some pieces of advice to both the students who have a similar background and to the supervisors who mentor these students. I will also discuss some…

The Physics department looks forward to meeting and welcoming the Class of 2027 at the upcoming Academic Expo from 1:00pm to 4:00pm on August 28th in Frick Chemistry Laboratory.

This event is open to undergraduate students.

The key word in the title is “IN”. Unlike AdS where observers can be thought of as living on the boundary of space, or even in a laboratory beyond the boundary, in dS the observer is part of the system; he or she lives “in” the de Sitter spacetime. Even worse, observers are mere transient fluctuations that originate on…

In this talk, I will present my work at the Istituto Nazionale di Ricerca Metrologica in Turin, Italy. I will begin with an overview of single photon superconducting sensors, followed by an explanation of the theory behind superconducting transition edge sensors. Then, I will demonstrate the in-house fabrication process we employ.

…

I will discuss exoplanets as new targets to discover Dark Matter (DM). Throughout the Milky Way, DM can scatter, become captured, deposit annihilation energy, and increase the heat flow within exoplanets. I will show estimates for infrared telescope sensitivity to this scenario, finding actionable discovery or exclusion searches. Supporting…

"Saturons" are macroscopic objects that exhibit maximal micristate degeneracy within the validity of a given quantum field theoretic description. Due to this feature, saturons and black holes belong to the same universality class with common key properties. However, as opposed to black holes, saturons…

"Superconductors come in many varieties: we typically classify them based on the symmetry of their superconducting gap, such as *s, p, *or *d*-wave. This classification, however, does not tell the entire story because the superconducting gap can also have topological structure. One route to topological superconductivity is to…

Some aspects of the black hole spectrum, coming from spacetime wormhole contributions, can be modeled by a random matrix ensemble. It is important to understand the appropriate ensemble for theories with extended supersymmetry, since for example this is the case for systems with known gravity duals coming from string…

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