搜索结果: 136-150 共查到“知识库 热学”相关记录457条 . 查询时间(2.359 秒)
Reversible and Irreversible Spacetime Thermodynamics for General Brans-Dicke Theories
Spacetime Thermodynamics General Brans-Dicke Theories
2010/12/24
We derive the equations of motion for Palatini F(R) gravity by applying an entropy balance law T dS= \delta Q+\delta N to the local Rindler wedge that can be constructed at each point of spacetime. Un...
Entanglement Entropy of Two Black Holes and Entanglement Entropic Force
Entanglement Entropy Two Black Holes Entanglement Entropic Force
2010/12/23
We study the entanglement entropy, $S_C$, of a massless free scalar field on the outside region $C$ of two black holes $A$ and $B$ whose radii are $R_1$ and $R_2$ and how it depends on the distance, ...
Thermodynamics of SU(N) gauge theories in 2+1 dimensions in the $T <\ T_c$ regime
Thermodynamics SU(N) gauge theories
2010/12/27
We present Monte Carlo results for the thermodynamics of pure SU(N) gauge theories with $N=2,...,6$ in 2+1 dimensions. We focus on the confined phase region $T
Adiabaticity and emergence of classical space-time in time-dependent matrix theories
classical space-time time-dependent matrix theories
2010/12/23
We discuss the low-curvature regime of time-dependent matrix theories proposed to describe non-perturbative quantum gravity in asymptotically plane-wave space-times. The emergence of near-classical sp...
基于不可逆热力学的膜换湿过程研究
膜换湿 传热传质 不可逆热力学 特征参数
2013/9/9
利用非平衡热力学理论研究了膜换湿过程的热质耦合现象, 建立了相应的物理数学模型, 求得了非平衡热力学模型中各特征参数的具体表达式, 分析了各特征参数与膜两侧温度和浓度的依变关系, 为传质通量和传热通量的分析计算奠定了基础. 探讨了膜两侧温差、浓度差以及膜平均温度对透膜通量及热流束的影响情况, 结果表明: 当膜平均温度相同时, 膜两侧浓度差越大或温差越小对应的透膜传质通量就越大; 当膜两侧的浓度差和...
A thermal field theory derivation of the source term induced by a fast parton from the quark energy-momentum tensor
thermal field theory derivation term induced quark energy-momentum tensor
2011/1/5
I derive the distribution of energy and momentum transmitted from a fast parton to a medium of
thermalized quarks, or the source term, in perturbative thermal field theory directly from the quark ene...
Coulomb interaction in graphene: Relaxation rates and transport
Coulomb interaction in graphene Relaxation rates transport
2010/11/25
We analyze the inelastic electron-electron scattering in undoped graphene within the Keldysh
diagrammatic approach. We demonstrate that finite temperature strongly affects the screening
properties o...
Transport, atom blockade and output coupling in a Tonks-Girardeau gas
Transport atom blockade output coupling
2010/11/24
Recent landmark experiments have demonstrated how quantum mechanical impurities can be
created within strongly correlated quantum gases and used to probe the coherence properties of these systems [1]...
Non-Gaussianities in Multifield Inflation: Superhorizon Evolution, Adiabaticity, and the Fate of fnl
Non-Gaussianities in Multifield Inflation Superhorizon Evolution Adiabaticity Fate of fnl
2010/12/21
We explore the superhorizon generation of large fNL of the local form in two eld in
ation.We calculate the two- and three-point observables in a general class of potentials which allow for an analyt...
Nanofluids are suspensions of nanoparticles and fibers which have recently attracted much attention due to their superior thermal properties. Here, nanofluids are studied in the sense of nanofins tran...
Here we show how an anisotropic uid in the di usion limit can be equivalent to an isotropic
uid in the streaming out limit, in spherical symmetry.
Fast computation of multi-scale combustion systems
Fast computation multi-scale combustion systems
2010/11/23
In the present work, we illustrate the process of constructing a simplified model for complex
multi-scale combustion systems. To this end, reduced models of homogeneous ideal gas mixtures
of methane...
Aging of a Homogeneously Quenched Colloidal Glass-forming Liquid
Aging Homogeneously Quenched Colloidal Glass-forming Liquid
2010/11/24
The non-equilibrium self-consistent generalized Langevin equation theory of colloid dynamics
is used to describe the non-stationary aging processes occurring in a suddenly quenched model
colloidal l...
The role of bandstructure in the thermodynamic properties of itinerant metamagnets
thermodynamic properties itinerant metamagnets
2010/11/23
It is known that itinerant metamagnetic transitions can be driven by features in the electronic
density of states. We study the signatures of these transitions in the entropy and speci c heat for a v...
Quantum relaxation after a quench in systems with boundaries
Quantum relaxation boundaries
2010/11/23
We study the time-dependence of the magnetization profile, ml(t), of a large finite open quantum Ising chain after a quench. We observe a cyclic variation, in which starting with an exponentially decr...