# Events Archive

## 2018

### HET Seminar | Mikhail Vasiliev, Lebedev Physical Institute, Moscow | "From Coxeter Higher-Spin Theories to Strings and Tensor Models" | Jadwin A06

Mon, Apr 23, 2018, 2:30 pm

A new class of higher-spin gauge theories associated with various Coxeter groups is proposed. The emphasize  is on the $B_p$--models. The multi-particle $B_2$--higher-spin theory is conjectured to be associated with String Theory. $B_p$--higher-spin models with $p>2$ are anticipated to be dual to the rank-$p$ boundary tensor sigma-models.

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### Biophysics Seminar: Andy Leifer, Princeton

Mon, Apr 23, 2018, 12:15 pm to 1:15 pm

Please join us at 12 noon for lunch, seminar from 12:15-1:15.

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### HET Seminar at IAS | Ellis Ye Yuan, School of Natural Sciences, IAS | "Simplicity in AdS Perturbative Dynamics”

Fri, Apr 20, 2018, 1:45 pm

I will make some preliminary investigations to perturbativedynamics in AdS, more precisely the Mellin amplitudes associated to particle scattering, at loop level.

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### Gravity Group Lunch Seminar, William Coulton (Princeton) "Probing galactic foregrounds and neutrino mass with the bispectrum"

Fri, Apr 20, 2018, 12:00 pm

Measuring primordial B modes is one of the main goals of many current and upcoming CMB experiments. One major obstacle in measuring the primordial B modes is the presence of foregrounds, which seem to dominate the primordial signal at all frequencies. I will present our investigation into the bispectrum of the galactic foregrounds.

### Hamilton Colloquium Series: Kater Murch, Washington U., St. Louis; "Realizing a quantum Maxwell’s demon with superconducting circuits"

Thu, Apr 19, 2018, 4:00 pm
Thermodynamics is a field of physics that describes quantities such as heat and work and their relationship to entropy and temperature. Originally developed as a theory to optimize the efficiency of heat engines, two extensions of thermodynamics in the last century advanced the theory to the point at which quantum mechanics should be incorporated.
Audience: A free lecture open to the public.
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### Pheno & Vino Seminar | Csaba Csaki, Cornell | "Neutron stars chirp about vacuum energy" | Jadwin 303

Thu, Apr 19, 2018, 2:00 pm

Abstract:  : While the current vacuum energy of the Universe is very small, in our standard cosmological picture it has been much larger at earlier epochs.

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### HET Seminar at IAS | Nissan Itzhaki, Tel Aviv University | "FZZ Duality and the Black Hole Horizon"

Mon, Apr 16, 2018, 2:30 pm

Description: We discuss some target space aspects of the FZZ duality both in the Euclidean setup of the cigar geometry and in the SL(2)/U(1) black hole. We argue that the 2D classical SL(2)/U(1) black hole could shed some light on quantum black holes in higher dimensions including large black holes in AdS.

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### Condensed Matter Seminar | Philip Phillips, UIUC | "Anomalous Dimensions for Conserved Currents and Extra Dimensions in the Strange Metal?" | Jadwin PCTS Seminar Room 407

Mon, Apr 16, 2018, 1:15 pm

Abstract:  It is well known that conserved quantities cannot have anomalous dimensions.  However, a recent proposal for the ubiquitous strange metal phase in the cuprates argues just the opposite.  Namely,  all of the properties of such `strange metals' can be understood if the current has an anomalous dimension.

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### Biophysics Seminar: David Schwab, CUNY

Mon, Apr 16, 2018, 12:15 pm

Please join us at 12 noon for lunch, seminar from 12:15-1:15.

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### HET Seminar | Sarah Harrison, McGill | "Borcherds Kac-Moody Algebras and BPS States in String Theory" | PCTS Seminar Room

Fri, Apr 13, 2018, 1:45 pm

Abstract: Borcherds Kac-Moody (BKM) algebras are a generalization of familiar Kac-Moody algebras with imaginary simple roots. On the one hand, they were invented by Borcherds in his proof of the monstrous moonshine conjectures and have many interesting connections to new moonshines, number theory and the theory of automorphic...

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### Gravity Group Lunch Seminar, Colin Hill (CCA, IAS) "CMB Foregrounds: Problems, Parameterizations, and Progress"

Fri, Apr 13, 2018, 12:00 pm

The next frontiers in cosmic microwave background (CMB) science include a detailed mapping of the CMB polarization anisotropy, with goals of detecting the inflationary B-mode signal and constructing high-fidelity maps of the matter distribution via CMB lensing reconstruction, as well as a first detection of CMB spectral distortions.  At this...

### Donald R. Hamilton Lecture - Kip Thorne, Caltech: “Exploring the Universe with Gravitational Waves: From the Big Bang to Black Holes and Colliding Stars”

Thu, Apr 12, 2018, 8:00 pm to 9:00 pm
Kip Thorne
Audience: A free lecture open to the public.
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### Donald R. Hamilton Lecture: Kip Thorne, Caltech, “Exploring the Universe with Gravitational Waves: From the Big Bang to Black Holes and Colliding Stars”

Thu, Apr 12, 2018, 8:00 pm
Kip Thorne
Feynman Professor of Physics, Emeritus, Caltech
Joint Winner of the 2017 Nobel Prize in Physics*
Audience: A free lecture open to the public.

### APS Robert Dicke Dedication | Jadwin A10

Thu, Apr 12, 2018, 2:00 pm
Celebrating the Legacy of Robert Dicke

Program

Audience: A free lecture open to the public.

### Informal High Energy Theory Seminar@ IAS-“Wavefunctions for a one-dimensional black hole” S. Josephine Suh-Caltech

Thu, Apr 12, 2018, 1:45 pm

Description: We reduce the dynamics of a nearly-AdS_2 spacetime to that of twoparticles in AdS_2. We determine the class of physically meaningfulwavefunctions, normalize them, and find the density of states.  These canbe derived from analytically continuing Euclidean solutions.

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### Special Condensed Matter Seminar | Rudolf Grimm, UIBK | "Impurities in an ultracold Fermi sea: Quasiparticles, phase separation and beyond" | Jadwin 111

Tue, Apr 10, 2018, 1:30 pm

Abstract:  Impurity physics has emerged as a new branch of research in the field of atomic quantum gases. A central feature is the wide tunability of interactions between the impurities and the surrounding medium. By using magnetically controlled Feshbach resonances, regimes of strong interactions can be reached which reveal intriguing many-...

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### HET Seminar | Huajia Wang, UIllinois Urbana-Champaign | "Probing beyond ETH at large $c$" | Jadwin A06

Mon, Apr 9, 2018, 2:30 pm

Eigenstate thermalization hypothesis (ETH) is a phenomena often observed in systems characterized by quantum chaos. In this talk, we study ETH in 2d CFTs with large central charges. In particular, we focus on observables consisting of bilocal "probe" operators $\mathcal{O}_L(x)\mathcal{O}_L(0)$.

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### Condensed Matter Seminar | Benjamin Lev, Stanford | "Exploring quantum thermalization with a magnetic quantum Newton’s cradle" | Jadwin 303

Mon, Apr 9, 2018, 1:15 pm

Abstract:  Isolated quantum many-body systems with integrable dynamics generically do not thermalize starting from generic initial states when taken far from equilibrium.  As one perturbs such systems away from the integrable point, thermalization sets in, but the nature of the crossover from integrable to thermalizing behavior is an unresolved...

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