I will present over 100 cosmological zoom-in simulations of Milky Way and strong lens analogs in a variety of dark matter models beyond CDM. The shape of the linear matter power spectrum, P(k), is clearly imprinted on the corresponding subhalo mass functions. Modeling this effect improves fuzzy and interacting dark matter bounds by…

I propose a bottom-up correspondence between a CFT defined on 2D non-orientable manifolds, such as the real projective plane (RP2) and the Klein bottle (K2), and AdS3 Einstein gravity with dS2 end-of-the-world branes. In this correspondence, a global dS2 end-of-the-world brane (a quotient by Z2) is described by the unitary time evolution of a…

Neurons often exhibit considerable fluctuations in their spontaneous (stimulus-free) activity, characterized by correlation functions. Neurons also react to time-dependent stimuli described by response functions. Because the neural raison d'etre is information processing and transmission (shaped by both their fluctuation and response properties…

Abstract: The Anti-de-Sitter/Condensed Matter Theory (AdS/CMT) correspondence has attracted significant attention within high-energy physics, particularly in the study of holographic superconductors, which are modeled as asymptotically Anti-de-Sitter (AdS) hairy black holes. In this talk, I will present recent mathematical advancements in the…

Local excitations in magnetic materials are usually highly incoherent, since they dephase very quickly due to mutual interactions. However, there are interesting exceptions to this common lore. Our joint experimental and theoretical study of the random rare-earth magnet LiY1−xTbxF4 [1] reveals that a combination of hyperfine interactions,…

Microbes have evolved genetically encoded machinery enabling them to utilize the abundant redox‐active molecules and extracellular minerals. Recently, the machinery enabling these redox reactions have been leveraged for interfacing cells and biomolecules with electrical circuits for biotechnological applications in energy harvesting, chemical…

I will talk about the scattering problem in general relativity, and present a construction of a scattering theory resolving the problem for the linearised Einstein equations in a double null gauge against a Schwarzschild background. This is done by first constructing a scattering theory for the gauge invariant components of the linearised…

First introduced in the 60s, positivity bounds for S-matrices have undergone a revival in the past few years, with systematic implementations that improve by the day. Among the recent results are sharp bounds on the EFTs of various gauge and gravitational theories. A common feature of the resulting exclusion regions, however, is that they tend…

Axion dark matter thermalizes by gravitational self-interactions and forms a Bose-Einstein condensate.  It is shown that the rethermalization of the axion fluid during the initial collapse of large scale overdensities at cosmic dawn transports angular momentum outward sufficiently fast  that black holes form with masses ranging from …

I shall describe the recent theoretical advances in the description of turbulence in different media.

An important point is how different the meaning of renormalization in turbulence is from what we used to know in the field theory.

For quartic interaction, we were recently able to compute the vertex renormalization and distinguish…

Based on…

Most proteins in the cell are only marginally stable, to allow their flexibility and plasticity and ultimately their easy recycling. The downside is the sensitivity of the structure of proteins to perturbations, in the form of environmental stresses and/or mutation, and the ensuing aggregation, which is in general toxic to all organisms.

In this talk, I will present recent developments in the study of Conformal Field Theories (CFTs) at finite temperature. The motivation for this work is different applications to holography, black holes in AdS as well as statistical physics. Thermal dynamics are constrained by the Kubo-Martin-Schwinger (KMS) condition…

When electrons are forced to interact strongly with each other, some of the most exotic electronic phases and novel quasiparticles may emerge. A key approach to force electrons to strongly interact with one another is to confine them to energy bands with no momentum dispersion, i.e. flat bands. Flat bands can be realized in two-dimensional…

The Hartree-Fock-Bogoliubov approximation of superconducting ground states can be naturally described using Araki's self-dual canonical anti-commutation relation (CAR) algebra. Using this framework, we first review the K-theoretic classification of free fermions with an emphasis on unique gapped ground states. Ideas from index theory and coarse…

Since the discovery of superconductivity at 80 K in single crystals of La3Ni2O7 at pressures above 14.0 GPa, extensive efforts have been made to understand the properties of the bilayer nickelate system at both ambient and high pressure [1-3]. Density-wave-like orders, structural transition, strange metal behavior, oxygen vacancies,…

We consider quantum electrodynamics in 2+1 dimensions (QED3) with N matter fields and Chern-Simons level k. For small values of k and N, this theory describes various experimentally relevant systems in condensed matter, and is also conjectured to be part of a web of non-supersymmetric dualities. We compute the scaling dimensions of monopole…

Chirality is prevalent in nature and plays a crucial role in contexts ranging from left-right symmetry breaking in animal development to shaping material properties in synthetic systems. In this talk, I will discuss how chirality can emerge in multicellular systems, and how collectives of chiral particles exhibit novel material properties such…