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.

# Events Archive

## 2018

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

### Biophysics Seminar: Andy Leifer, Princeton

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

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

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

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

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"

### Pheno & Vino Seminar | Csaba Csaki, Cornell | "Neutron stars chirp about vacuum energy" | Jadwin 303

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.

### Math Physics Seminar | Chris Fronsdal, UCLA | "A classic Mistake and what it tells us" | Jadwin 343

Abstract:

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

**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.

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

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.

### Biophysics Seminar: David Schwab, CUNY

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

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

**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...

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

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”

**Kip Thorne**

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

**Kip Thorne**

Feynman Professor of Physics, Emeritus, Caltech

**Joint Winner of the 2017 Nobel Prize in Physics***

### APS Robert Dicke Dedication | Jadwin A10

**Program**

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

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.

### Physics Group Meeting at IAS-“Group Meeting on Moving the Holographic Boundary into the Bulk”-Juan Maldacena and Herman Verlinde

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

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-...

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

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 $\mathcal{O}_L(x)\mathcal{O}_L(0)$.

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

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...