scholarly journals Microscopic theory of the friction force exerted on a quantum impurity in one-dimensional quantum liquids

2020 ◽  
Vol 101 (10) ◽  
Author(s):  
Aleksandra Petković
Keyword(s):  
Friction Force ◽  
Microscopic Theory ◽  
One Dimensional ◽  
Quantum Liquids ◽  
Quantum Impurity

QUANTUM REFLECTION, EVAPORATION, AND TRANSPORT CURRENTS AT 4He SURFACES

2006 ◽  
Vol 20 (30n31) ◽  
pp. 5047-5056
Author(s):  
V. APAJA ◽  
E. KROTSCHECK ◽  
A. RIMNAC ◽  
R. E. ZILLICH
Keyword(s):  
Excited States ◽  
Theoretical Study ◽  
Transport Phenomena ◽  
Microscopic Theory ◽  
Second Order ◽  
Quantum Liquid ◽  
Quantum Reflection ◽  
Quantum Liquids ◽  
Inhomogeneous Quantum

In this work, we study transport currents in excited states. This requires the calculation of particle currents [Formula: see text] to second order in the excitation amplitudes. For that purpose, we take a well-tested microscopic theory of inhomogeneous quantum liquids and extend it to find the mass currents created when atoms scatter off a surface or when excitations evaporate atoms. This is the first theoretical study of transport phenomena in a quantum liquid based on a quantitative microscopic theory.

scholarly journals Dynamical Properties of One-Dimensional Multicomponent Quantum Liquids in Metallic Phase

2002 ◽  
Vol 71 (8) ◽  
pp. 1947-1955 ◽  
Author(s):  
Satoshi Miyashita ◽  
Akira Kawaguchi ◽  
Norio Kawakami
Keyword(s):  
Metallic Phase ◽  
One Dimensional ◽  
Quantum Liquids ◽  
Dynamical Properties

THEORY OF QUANTUM LIQUIDS: WHERE WE ARE AND WHERE WE ARE GOING

1999 ◽  
Vol 13 (05n06) ◽  
pp. 579-594
Author(s):  
E. KROTSCHECK
Keyword(s):  
Symmetry Breaking ◽  
Present State ◽  
Present Status ◽  
Microscopic Theory ◽  
Simulation Methods ◽  
Conservative Approach ◽  
Open Problems ◽  
Quantum Liquids

The present status of the microscopic understanding of quantum liquids is reviewed. We take a conservative approach and focus thoroughly on two examples: the neutral quantum liquids 4 He and 3 He . The first part of this contribution reviews the present state of the microscopic theory of these systems. Results of both simulation methods and semi-analytic theories are discussed and compared. Quantum liquids in non-uniform geometries lead, due to symmetry breaking, to a number of new and interesting effects and also to new experimental possibilities and theoretical challenges. Finally, we highlight a number of yet open problems where present microscopic approaches have so far been unsuccessful.

scholarly journals On the Casimir energy of the electromagnetic field in the dispersive and absorptive medium

2014 ◽  
Vol 29 (18) ◽  
pp. 1450101
Author(s):  
M. A. Braun
Keyword(s):  
Dielectric Constant ◽  
Electromagnetic Field ◽  
Casimir Effect ◽  
Direct Interaction ◽  
Microscopic Theory ◽  
Casimir Energy ◽  
Indirect Interaction ◽  
One Dimensional ◽  
Absorptive Medium ◽  
The One

The microscopic theory of the Casimir effect in the dielectric is studied in the framework when absorption is realized via a reservoir modeled by a set of oscillators with continuously distributed frequencies with the aim to see if the effects depend on the form of interaction with the reservoir. A simple case of the one-dimensional dielectric between two metallic plates is considered. Two possible models are investigated, the direct interaction of the electromagnetic field with the reservoir and indirect interaction via an intermediate oscillator imitating the atom. It is found that with the same dielectric constant the Casimir effect is different in these two cases, which implies that in the second model it cannot be entirely expressed via the dielectric constant as in the well-known Lifshitz formula.

scholarly journals Critical Velocity of a Mobile Impurity in One-Dimensional Quantum Liquids

2012 ◽  
Vol 108 (20) ◽  
Author(s):  
M. Schecter ◽  
A. Kamenev ◽  
D. M. Gangardt ◽  
A. Lamacraft
Keyword(s):  
Critical Velocity ◽  
One Dimensional ◽  
Quantum Liquids

scholarly journals Dynamics and Bloch oscillations of mobile impurities in one-dimensional quantum liquids

2012 ◽  
Vol 327 (3) ◽  
pp. 639-670 ◽  
Author(s):  
M. Schecter ◽  
D.M. Gangardt ◽  
A. Kamenev
Keyword(s):  
Bloch Oscillations ◽  
One Dimensional ◽  
Quantum Liquids
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