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Physics Department presents Effects of confinement and degeneracy on optomechanical interaction between whispering-gallery-modes and a nanoparticle: old results and new ideas

Optical force on a polarizable dipole is usually divided into a conservative force, described as a gradient of the effective potential energy proportional to the intensity of electromagnetic field, and a non-conservative scattering or radiative pressure force. In this talk i will show that combination of the confinement of light in highly symmetrical optical cavity

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Physics Department presents Topologically Ordered Matter and Why You Should be Interested

Presented by Professor Steven Simon, Oxford University, UK Abstract:In two dimensional topologically ordered matter, processes depend on gross topology rather than detailed geometry. Thinking in 2+1 dimensions, particle world lines can be interpreted as knots or links, and the amplitude for certain processes becomes a topological invariant of that link. While sounding rather exotic, we

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Physics Department presents Resonant time-symmetry breaking in classical and quantum oscillators

Presented by: Professor Mark Dykman, Michigan State University A periodically driven system has discrete time-translation symmetry with the period of the driving. A nonlinear oscillator allows one to see peculiar features of quantum and classical fluctuations as well as tunneling and dissipation in resonantly driven systems. Generally, if a quantum system is in a Floquet

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Physics Department presents Fermi Pasta Ulam Tsingou chain: Thermalization and anomalous conduction

Presented by Yuri Lvov, Rensselaer Polytechnic Institute Where: Room 801N, NAMM Building Fermi-Pasta-Ulam-Tsingou (FPUT) chain is a simplified model of a one dimensional crystal, consisting of atoms linked by anharmonic chains. This model was introduced in the fifties of the previous century in Los Alamos to study heat conduction in solids. Despite the fact that

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Physics Department presents Indirect Excitons

Presented by Leonid V. Butov, University of California at San Diego A spatially indirect exciton (IX), also known as an interlayer exciton, is a bound pair of an electron and a hole confined in separated layers. Due to their long lifetimes, IXs can cool below the temperature of quantum degeneracy and can travel long distances.

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Physics Department presents Dissipation, drag, and diffusion in 1D solids

Presented by Aleksandr Rodin, Yale-NUS College Solid-state batteries have the potential to play an integral part in applications where traditional liquid-electrolyte cells are not ideal. A vital component of these batteries is a solid electrolyte: an electronic insulator capable of carrying ions between the anode and the cathode. Finding an optimal material for this component

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Physics Department presents The World According to a Risk Manager

Presented by Dr. Ilya Grigorenko, CLS-Group Room: CTP 801N Today, I am going to provide a comprehensive review of the historical evolution of Risk Management, its underlying purpose, why it is important, and the contemporary challenges it faces. Additionally, I will discuss the intricate relationships between modern finance, mathematics, and theoretical physics, illuminating the interplay