搜索结果: 31-45 共查到“知识库 统计力学”相关记录67条 . 查询时间(1.164 秒)
We examine energy transport in an ensemble of closed quantum systems driven by stochastic perturbations. One can show that the probability and energy fluxes can be described in terms of quantum advect...
Limitations on the Ginzburg criterion for dirty superconductors
dirty superconductors Ginzburg criterion superconducting fluctuations specific heat
2012/2/27
The contributions of superconducting fluctuations to the specific heat of dirty superconductors are calculated, including quantum and classical corrections to the `usual' leading Gaussian divergence. ...
Dynamics of Energy Fluctuations in Equilibrating and Driven-Dissipative Systems
Dynamics Energy Fluctuations Equilibrating Driven-Dissipative Systems
2012/2/27
When two isolated system are brought in contact, they relax to equilibrium via energy exchange. In another setting, when one of the systems is driven and the other is large, the first system reaches a...
We study the properties of mixed states obtained from eigenstates of many-body lattice Hamiltonians after tracing out part of the lattice. Two scenarios emerge for generic systems: (i) the diagonal en...
In this thesis, we study the critical dynamics near the QCD critical point. Near the critical point, the relevant modes for the critical dynamics are identified as the hydrodynamic modes. Thus, we fir...
The purpose of this work is to serve as an introduction to quantum chaos. We avoid the usual path of dealing with ensembles of random matrices and instead consider clean one-dimensional systems of spi...
A simple particle model for a system of coupled equations with absorbing collision term
Interacting particle systems large numbers limit absorption
2011/10/10
Abstract: We study a particle model for a simple system of partial differential equations describing, in dimension $d\geq 2$, a two component mixture where light particles move in a medium of absorbin...
Lagrangian formulation of turbulent premixed combustion
Lagrangian formulation turbulent premixed
2011/9/15
The Lagrangian point of view is adopted to study turbulent premixed combustion. The evolution of the volume fraction of combustion products is established by the Reynolds transport theorem. It emerges...
Diagrammatics for SU(2) invariant matrix product states
Diagrammatics matrix states Statistical Mechanics
2011/10/9
Abstract: We report on a systematic implementation of su(2) invariance for matrix product states (MPS) with concrete computations cast in a diagrammatic language. As an application we present a variat...
Lattice permutations and Poisson-Dirichlet distribution of cycle lengths
Lattice permutations Poisson-Dirichlet distribution Statistical Mechanics
2011/10/9
Abstract: We study random spatial permutations on Z^3 where each jump x -> \pi(x) is penalized by a factor exp(-T ||x-\pi(x)||^2). The system is known to exhibit a phase transition for low enough T wh...
Renormalization group treatment of rigidity percolation
rigidity percolation Statistical Mechanics Mathematical Physics
2011/10/9
Abstract: Renormalization group calculations are used to give exact solutions for rigidity percolation on hierarchical lattices. Algebraic scaling transformations for a simple example in two dimension...
Lattice quantum electrodynamics for graphene
Graphene Lattice Gauge Theory honeycomb lattice Kekule mass generation Ward Identities Renormalization Group Critical exponents
2011/10/9
Abstract: The effects of gauge interactions in graphene have been analyzed up to now in terms of effective models of Dirac fermions. However, in several cases lattice effects play an important role an...
Abstract: We consider the mean time to absorption by an absorbing target of a diffusive particle with the addition of a process whereby the particle is reset to its initial position with rate $r$. We ...
Spectra of sparse regular graphs with loops
sparse regular graphs loops Statistical Mechanics
2011/10/9
Abstract: We derive exact equations that determine the spectra of undirected and directed sparsely connected regular graphs containing loops of arbitrary length. The implications of our results to the...
Random Geometry, Quantum Gravity and the Kahler Potential
Random Geometry Quantum Gravity the Kahler Potential Statistical Mechanics
2011/10/9
Abstract: We propose a new method to define theories of random geometries, using an explicit and simple map between metrics and large hermitian matrices. We outline some of the many possible applicati...