Neuropeptides are ubiquitous signaling molecules that underpin almost all brain functions. They mediate extrasynaptic communication in nervous systems predominantly by binding to cell surface G protein-coupled receptors (GPCRs). The number of neuropeptide pathways is diverse and peptide-activated GPCRs are widely expressed throughout the brain,…

Kick off the Reunions weekend with a bang! Fun physics demos for all ages.

I will discuss two methods for diagnosing ’t Hooft anomalies of internal symmetries in 2+1d lattice systems. Anomalous symmetries of this kind arise naturally at the boundary of 3+1D symmetry-protected topological phases, and are known to be classified by the group cohomology of the symmetry group. The first method is…

Topology and quantum optics are two fields whose interplay can give rise to new physics [1]. By properly designing a photonic lattice (i.e., the structured reservoir), it is possible to engineer photon-mediated spin Hamiltonians between quantum emitters coupled to it. In particular, it is possible to endow photonic structures with Hermitian or…

We study the operator algebra of extended conformal defects in more than two spacetime dimensions. Such algebra structure encodes the combined effect of multiple impurities on physical observables at long distances as well as the interactions among the impurities. These features are formalized by a fusion product which…

Circadian clocks regulate the timing of various behavioral and physiological activities in most organisms on a 24-hr scale such that they are phased appropriately to external, cyclic changes in the environment. The clock neuronal network in *Drosophila melanogaster* is comprised of ~150 neurons distributed bilaterally in the brain,…

Black hole X-ray binaries and Active Galactic Nuclei transition through a series of accretion states in a well-defined order. During a state transition, the accretion flow changes from a hot geometrically thick accretion flow, emitting a power-law–like hard spectrum to a geometrically thin, cool accretion flow,…

The Gaiotto-Moore-Witten "Algebra of the Infrared" allows one to construct the category of supersymmetric boundary conditions for a wide class of massive N=(2,2) QFTs in two dimensions. In particular, it applies to N=(2,2) QFTs defined by a Morse superpotential W. However, the formalism breaks down if we consider an N=…

Earthquakes exhibit complex behavior at all scales, from the evolution of slip during a single rupture lasting seconds to minutes, to the statistics of regional seismicity over years or centuries. The origin of complexity in fault behavior has long been debated: is it a reflection of heterogeneity or…

Artificial Intelligence advancement in the last decade can boost the discovery potential of modern science experiments. Bringing AI to the data creation of large complex science instruments opens up new possibilities towards discoveries currently inaccessible. To harness the Proton-Proton collisions at the highest energy of unprecedented…

A clear outcome of Snowmass 2021 and now the US P5 report was the community support for R&D towards a future muon collider. In this talk we will discuss the general physics program that becomes available to the community during the construction and completion of the future collider. We will review not only the main challenges…

Fractals -- objects with non-integer dimensions -- occur in manifold settings and length scales in nature, ranging from snowflakes and lightning strikes to natural coastlines. Much effort has been expended to generate fractals for use in many-body physics. Here, we identify an emergent dynamical fractal in a disorder-free, stoichiometric three…

Many of the physical processes in a cell consume energy, but we are only beginning to understand how these costs have influenced the course of evolution. Biology is strewn with counter-intuitively complex mechanisms whose evolutionary predecessors must have consumed significant energy resources without any clear fitness benefit. So how do such…

I will give an overview of recent activity based on the idea that we can test quantum properties of the gravitational field in experiments. I will emphasize the need to state precisely what hypotheses are being tested by showing some explicit models low-energy gravity that violate the usual rules of effective …

*I will discuss the general framework of effective theories obtained via exact path integration of a complete theory over some sector of its degrees of freedom.Theories constructed this way contain multi-integrals which couple fields arbitrarily far apart. In certain settings these couplings connect path-disconnected components of the…*

Much of the recent rigours progress on the classical Ising model was driven by new detailed understanding of its stochastic geometric representations - in particular the random current representation. Motivated by the problem of establishing exponential decay of truncated correlations of the supercritical Ising model in any dimension,Duminil…

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