scholarly journals Finite-temperature transport in finite-size Hubbard rings in the strong-coupling limit

2000 ◽  
Vol 61 (8) ◽  
pp. 5169-5183 ◽  
Author(s):  
N. M. R. Peres ◽  
R. G. Dias ◽  
P. D. Sacramento ◽  
J. M. P. Carmelo
Keyword(s):  
Strong Coupling ◽  
Finite Temperature ◽  
Finite Size ◽  
Strong Coupling Limit

scholarly journals BROWN-RHO SCALING IN THE STRONG COUPLING LATTICE QCD

2008 ◽  
Vol 23 (27n30) ◽  
pp. 2459-2464 ◽  
Author(s):  
A. OHNISHI ◽  
N. KAWAMOTO ◽  
K. MIURA
Keyword(s):  
Lattice Qcd ◽  
Strong Coupling ◽  
Finite Temperature ◽  
Chemical Potential ◽  
Chiral Condensate ◽  
Strong Coupling Limit ◽  
Analytical Expression

We examine the Brown-Rho scaling for meson masses in the strong coupling limit of lattice QCD with one species of staggered fermion. Analytical expression of meson masses is derived at finite temperature and chemical potential. We find that meson masses are approximately proportional to the equilibrium value of the chiral condensate, which evolves as a function of temperature and chemical potential.

Lattice SU(N) OCD at finite temperature and density in the strong coupling limit

1987 ◽  
Vol 186 (3-4) ◽  
pp. 395-400 ◽  
Author(s):  
Elbio Dagotto ◽  
Adriana Moreo ◽  
Ulli Wolff
Keyword(s):  
Strong Coupling ◽  
Finite Temperature ◽  
Strong Coupling Limit

Exchange-Correlation Energy Densities and Response Potentials: Connection Between Two Definitions and Analytical Model for the Strong-Coupling Limit of a Stretched Bond

2019 ◽  
Author(s):  
S. Giarrusso ◽  
Paola Gori-Giorgi
Keyword(s):  
Density Functional Theory ◽  
Strong Coupling ◽  
Density Functional ◽  
Correlation Energy ◽  
Order Term ◽  
Strong Coupling Limit ◽  
Local Form ◽  
Coupling Constant ◽  
Functional Theory ◽  
Exchange Correlation

We analyze in depth two widely used definitions (from the theory of conditional probablity amplitudes and from the adiabatic connection formalism) of the exchange-correlation energy density and of the response potential of Kohn-Sham density functional theory. We introduce a local form of the coupling-constant-dependent Hohenberg-Kohn functional, showing that the difference between the two definitions is due to a corresponding local first-order term in the coupling constant, which disappears globally (when integrated over all space), but not locally. We also design an analytic representation for the response potential in the strong-coupling limit of density functional theory for a model single stretched bond.<br>

TOPOLOGY OF THE GRASSMANNIAN σ MODEL ON A LATTICE

1987 ◽  
Vol 02 (08) ◽  
pp. 601-608 ◽  
Author(s):  
T. FUKAI ◽  
M. V. ATRE
Keyword(s):  
Partition Function ◽  
Strong Coupling ◽  
Wilson Loop ◽  
Strong Coupling Limit ◽  
Topological Term

The Grassmannian σ model with a topological term is studied on a lattice. The θ dependence of the partition function and the Wilson loop are evaluated in the strong coupling limit. The latter is shown to be independent of the area at θ = π, as in the CPN−1 model.

scholarly journals Fundamental limitations of the mode temperature concept in strongly coupled systems

2020 ◽  
Vol 75 (8) ◽  
pp. 803-807
Author(s):  
Svend-Age Biehs ◽  
Achim Kittel ◽  
Philippe Ben-Abdallah
Keyword(s):  
Heat Transfer ◽  
Heat Exchange ◽  
Strong Coupling ◽  
Quantum Systems ◽  
Coupled Systems ◽  
Strong Coupling Limit ◽  
Strongly Coupled ◽  
Fundamental Limitations ◽  
Temperature Concept ◽  
Vacuum Gap

AbstractWe theoretically analyze heat exchange between two quantum systems in interaction with external thermostats. We show that in the strong coupling limit the widely used concept of mode temperatures loses its thermodynamic foundation and therefore cannot be employed to make a valid statement on cooling and heating in such systems; instead, the incorrectly applied concept may result in a severe misinterpretation of the underlying physics. We illustrate these general conclusions by discussing recent experimental results reported on the nanoscale heat transfer through quantum fluctuations between two nanomechanical membranes separated by a vacuum gap.

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