Physics
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Physicists at Boston University look to open a window on the universe. An understanding of physics can elucidate everything from how a ball falls to the ground to what the early universe looked like, can shed light on the forces guiding the cosmos and the behavior of subatomic particles. A degree in physics provides the intellectual foundation for applications in engineering, technology, and industry, as well as in training the next generation of scientists at both the high school and university levels.
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Department chair: Andrei Ruckenstein
Campus address: 590 Commonwealth Avenue
Phone: 6173532600
Fax: 6173539393
Website: buphy.bu.edu
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Natural stabilization of the Higgs boson’s mass and alignment
Current data from the LHC indicate that the 125 GeV Higgs boson, H , is either the single Higgs of the Standard Model or, to a good approximation, an "aligned Higgs." We propose that H is the pseudoGoldstone dilaton of ... 
Magnetic field tuning of charge and spin order in the cuprate superconductors
(WORLD SCIENTIFIC PUBL CO PTE LTD, 20020830)Recent neutron scattering, nuclear magnetic resonance, and scanning tunneling microscopy experiments have yielded valuable new information on the interplay between charge and spin density wave order and superconductivity ... 
Decay of superfluid currents in a moving system of strongly interacting bosons
(AMER PHYSICAL SOC, 20050601)We analyze the stability and decay of supercurrents of strongly interacting bosons on optical lattices. At the meanfield level, the system undergoes an irreversible dynamic phase transition, whereby the current decays ... 
Nonequilibrium GrossPitaevskii dynamics of boson lattice models
(AMERICAN PHYSICAL SOC, 20021101)Motivated by recent experiments on trapped ultracold bosonic atoms in an optical lattice potential, we consider the nonequilibrium dynamic properties of such bosonic systems for a number of experimentally relevant situations. ... 
Cluster truncated Wigner approximation in strongly interacting systems
(ACADEMIC PRESS INC ELSEVIER SCIENCE, 20180801)We present a general method by which linear quantum Hamiltonian dynamics with exponentially many degrees of freedom is replaced by approximate classical nonlinear dynamics with the number of degrees of freedom (phase space ... 
Dynamical stability of a manybody Kapitza pendulum
(ACADEMIC PRESS INC ELSEVIER SCIENCE, 20150901)We consider a manybody generalization of the Kapitza pendulum: the periodicallydriven sine–Gordon model. We show that this interacting system is dynamically stable to periodic drives with finite frequency and amplitude. ... 
Dynamic trapping near a quantum critical point
(AMER PHYSICAL SOC, 20150226)The study of dynamics in closed quantum systems has been revitalized by the emergence of experimental systems that are wellisolated from their environment. In this paper, we consider the closedsystem dynamics of an ... 
Geometric speed limit of accessible manybody state preparation
(AMER PHYSICAL SOC, 20190220)We analyze state preparation within a restricted space of local control parameters between adiabatically connected states of control Hamiltonians. We formulate a conjecture that the time integral of energy fluctuations ... 
From quantum chaos and eigenstate thermalization to statistical mechanics and thermodynamics
(TAYLOR & FRANCIS LTD, 20160101)This review gives a pedagogical introduction to the eigenstate thermalization hypothesis (ETH), its basis, and its implications to statistical mechanics and thermodynamics. In the first part, ETH is introduced as a natural ... 
Negative mass corrections in a dissipative stochastic environment
(IOP PUBLISHING LTD, 20160201)We study the dynamics of a macroscopic object interacting with a dissipative stochastic environment using an adiabatic perturbation theory. The perturbation theory reproduces known expressions for the friction coefficient ...