Events Archive

2018

Astrophysics Seminar: Marco Vignati; Roma La Sapienza; "Superconducting Detectors for Neutrino and Dark Matter Searches"; Jadwin 303

Mon, Nov 12, 2018, 2:00 pm

Rare event searches in particle physics, such as Majorana neutrinos and Dark Matter interactions, require detectors with low energy threshold, excellent energy resolution and large sensing volumes. We are developing new sensors based on Kinetic Inductance Detectors, consisting in superconducting resonant circuits cooled below the critical...

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Biophysics Seminar: Lisa Manning, Syracuse University

Mon, Nov 12, 2018, 12:00 pm

What do guitar strings and balloons have in common with biological networks and tissues?

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HET Seminar | Kiryl Pakrouski, Princeton University | "Spectrum of Majorana Quantum Mechanics with $O(4)^3$ Symmetry" | PCTS Seminar Room

Fri, Nov 9, 2018, 1:45 pm

We study the quantum mechanics of 3-index Majorana fermions $\psi^{abc}$ governed by a quartic Hamiltonian with $O(N)^3$ symmetry.

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Gravity Group Lunch Seminar, Adri Duivenvoorden (Stockholm University) "CMB B-modes: optical systematics and novel non-Gaussianity"

Fri, Nov 9, 2018, 12:00 pm

One of the main goals of modern observational cosmology is to constrain or detect a stochastic background of primordial gravitational waves. Realizing this goal will rely on highly accurate measurements of the B-mode signature in the cosmic microwave background (CMB).

Hamilton Colloquium Series: Hugo Duminil Copin, IHES, "Probabilistic Approach to Critical Phenomena in Statistical Physics" Jadwin A10

Thu, Nov 8, 2018, 4:00 pm

The talk will present some of the recent progress in mathematical studies of critical phenomena of classical statistical mechanical systems.

Audience: A free lecture open to the public.
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Physics Group Meeting at IAS | Shota Komatsu, School of Natural Sciences, IAS | “Boundary Entropy in Integrable QFTs”

Wed, Nov 7, 2018, 1:45 pm

I will give introduction to general integrability-based methods to study two-dimensional quantum field theories. The goal (which I don't think I will achieve) is to explain how to compute the boundary entropy (also known as "g-function"), which quantifies the degrees of freedom associated with a boundary.

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Pheno & Vino Seminar | Simon Knapen, IAS | "Directional detection of light dark matter with athermal phonons" | Jadwin 303

Tue, Nov 6, 2018, 4:00 pm

Upcoming sensor technology allows for dark matter direct detection all the way down to the warm dark matter limit of ~ 10 keV. At such low masses, the usual nuclear recoil picture breaks down, as the dark matter recoils against athermal phonon modes instead.

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HET Seminar | Sergei Dubovsky, NYU | "On confining strings in diverse dimensions" | Jadwin A06

Mon, Nov 5, 2018, 3:00 pm

* Please note the special time and room. *

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HET Seminar at IAS | Victor Gorbenko, School of Natural Sciences, IAS | "TT¯ Deformation and Topological Gravity”

Fri, Nov 2, 2018, 1:45 pm

I will show how the TT¯ deformation of a two-dimensional QFT is related to coupling this QFT to a certain gravitational theory. This theory provides a natural set of clocks and rods which allow to define and compute the partition function on a torus. The result is the same as in the TT¯ deformed theory.

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FPO - Suerfu - "Developing Ultra Low-Background Sodium-Iodide Crystal Detector For Dark Matter Searches"

Fri, Nov 2, 2018, 11:00 am

Astronomical and cosmological observations have established that dark matter makes up about a quarter of the Universe.

Physics Group Meeting at IAS | Nima Lashkari, School of Natural Sciences, IAS | "Relative Entropy and Energy Conditions in QFT”

Wed, Oct 31, 2018, 1:45 pm

I will review the averaged null energy condition, the Markov property and the quantum null energy condition in quantum field theory from an information-theoretic point of view. I will give some explicit examples from finite quantum systems and free field theory to provide intuition about these inequalities.
Some references:

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HET Seminar at IAS | Leonardo Rastelli, Stony Brook University | “The Chiral Algebra Program for 4d Superconformal Field Theories”

Mon, Oct 29, 2018, 2:30 pm
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Condensed Matter Seminar | Hassan Shaporian, U of Oregan | "Topological invariants and entanglement in SPT phases of fermions" | Jadwin 303

Mon, Oct 29, 2018, 1:15 pm

Searching for a proper set of order parameters which distinguish different phases of matter sits in the heart of condensed matter physics. In this talk, I discuss topological invariants as (non-local) order parameters of symmetry protected topological (SPT) phases of fermions in the presence of anti-unitary symmetries.

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Physics Pumpkin Toss 2018!

Fri, Oct 26, 2018, 3:30 pm
AND THE WINNER IS...         
THE UNDERTAKERS!
Congratulations to the Physics Undergrads who scored three perfect "10" pointers to sweep the competition! 
Audience: Free and open to the public

Gravity Group Lunch Seminar, Mariangela Lisanti (Princeton) "Mapping the Local Dark Matter Distribution with Gaia-DR2"

Fri, Oct 26, 2018, 12:00 pm

Abstract: Using cosmological hydrodynamic simulations of Milky Way-mass galaxies from the FIRE project, we find a strong correlation between the velocity distribution of stars and dark matter accreted from luminous satellites.  I will review the findings of our work with the FIRE simulations, and discuss their implications for our own Galaxy. ...

Physics Group Meeting at IAS | Kyle Cranmer, School of Natural Sciences & University of Maryland | “Information Geometry and Machine Learning as Tools for Phenomenology”

Wed, Oct 24, 2018, 1:45 pm

I will discuss particle physics phenomenology from the point of view of statistical inference. 
I will describe how the concept of information geometry can be used to equip the parameter space of a theory with a metric. 

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Pheno & Vino Seminar | Gustavo Markes Tavares, U of Maryland | "Detecting dark matter from Supernovae" | Jadwin 303

Tue, Oct 23, 2018, 4:00 pm

The central region of Supernovae are one of the hottest and densest regions in the Universe. Due to the high temperatures, particles with sub-GeV masses can be copiously produced if they have non-negligible couplings to the Standard Model.

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HET Seminar | Tudor Dimofte, UC Davis | "Higher algebraic structures in SUSY QFT" | PCTS Seminar Room

Mon, Oct 22, 2018, 2:30 pm

In a TQFT of homological type, such as arises from the topological twist of a supersymmetric theory, it is well known that the local operators form an algebra, associative in dimension d >= 1 and commutative in d >= 2. The product comes from collision of operators.

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Biophysics Seminar: Alvaro Sanchez, Yale

Mon, Oct 22, 2018, 12:00 pm

Metabolic rules of microbial community assembly

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HET Seminar at IAS | Kantaro Ohmori, School of Natural Sciences, IAS | “Continuous 2-group symmetry of 6d N=(1,0) LST and T-dualities”

Fri, Oct 19, 2018, 1:45 pm

It is recently recognized that the global symmetry of a theory can be a nontrivial mixture of 0-form and 1-form global symmetries, called 2-group symmetry. A place where 2-group symmetry ubiquitously exists is 6d N=(1,0) little string theories.

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