Liquid helium on a surface: Ground state, excitations, condensate fraction, and impurity potential

1985 ◽  
Vol 32 (9) ◽  
pp. 5713-5730 ◽  
Author(s):  
E. Krotscheck
Keyword(s):  
Liquid Helium ◽  
Ground State ◽  
Condensate Fraction ◽  
Impurity Potential

Ground State of Two-Dimensional Liquid Helium

1972 ◽  
Vol 6 (5) ◽  
pp. 1942-1947 ◽  
Author(s):  
Michael D. Miller ◽  
Chia-Wei Woo ◽  
Charles E. Campbell
Keyword(s):  
Liquid Helium ◽  
Ground State ◽  
Two Dimensional

Ground State of Liquid Helium—Boson Solutions for Mass 3 and 4

1967 ◽  
Vol 157 (1) ◽  
pp. 190-190 ◽  
Author(s):  
Walter E. Massey
Keyword(s):  
Liquid Helium ◽  
Ground State

Ground state of liquid helium-3: off-shell effects due to non-local potentials

Pramana ◽  
1976 ◽  
Vol 6 (6) ◽  
pp. 373-382
Author(s):  
Y S T Rao ◽  
I Rama Rao
Keyword(s):  
Liquid Helium ◽  
Ground State ◽  
Shell Effects ◽  
Non Local ◽  
Local Potentials ◽  
Helium 3

Effects of Temperature and Hydrogen-Like Impurity on the Vibrational Frequency of the Polaron in RbCl Parabolic Quantum Dots

NANO ◽  
2016 ◽  
Vol 11 (03) ◽  
pp. 1650029 ◽  
Author(s):  
Wei Xiao ◽  
Jing-Lin Xiao
Keyword(s):  
Binding Energy ◽  
Ground State Energy ◽  
Ground State ◽  
Vibrational Frequency ◽  
State Energy ◽  
Impurity Potential ◽  
Ground State Binding Energy ◽  
Effects Of Temperature ◽  
Increasing Function ◽  
Coulombic Impurity Potential

The properties of an electron strongly coupled to longitudinal optical (LO) phonon in RbCl parabolic quantum dot (PQD) with a hydrogen-like impurity at the center were investigated at a finite temperature. We have obtained the vibrational frequency of a strong-coupling polaron in RbCl PQD by using linear combination operator method. We then calculate the effects of temperature, the Coulombic impurity potential and the effective confinement strength on the vibrational frequency by using unitary transformation and the quantum statistics theory methods. The influences of the temperature, the Coulombic impurity potential and the effective confinement strength on the ground state energy and the ground state binding energy are also analyzed. The strengths of these quantities increase with raising temperature. The vibrational frequency is an increasing function of the Coulombic impurity potential and the effective confinement strength. The ground state energy is an increasing function of the effective confinement strength, whereas it is a decreasing one of the Coulombic impurity potential. The ground state binding energy is an increasing function of the Coulombic impurity potential, whereas it is a decayed one of the effective confinement strength.

Condensate fraction and momentum distribution in the ground state of liquidHe4

1985 ◽  
Vol 31 (11) ◽  
pp. 7022-7028 ◽  
Author(s):  
E. Manousakis ◽  
V. R. Pandharipande ◽  
Q. N. Usmani
Keyword(s):  
Momentum Distribution ◽  
Ground State ◽  
Condensate Fraction

scholarly journals Pattern Formation in One-Dimensional Polaron Systems and Temporal Orthogonality Catastrophe

Atoms ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 3
Author(s):  
Georgios M. Koutentakis ◽  
Simeon I. Mistakidis ◽  
Peter Schmelcher
Keyword(s):  
Ground State ◽  
Collective Excitation ◽  
Interspecies Interaction ◽  
Quasi Particle ◽  
Impurity Potential ◽  
One Dimensional ◽  
Zero Range ◽  
Dynamical Properties ◽  
The One

Recent studies have demonstrated that higher than two-body bath-impurity correlations are not important for quantitatively describing the ground state of the Bose polaron. Motivated by the above, we employ the so-called Gross Ansatz (GA) approach to unravel the stationary and dynamical properties of the homogeneous one-dimensional Bose-polaron for different impurity momenta and bath-impurity couplings. We explicate that the character of the equilibrium state crossovers from the quasi-particle Bose polaron regime to the collective-excitation stationary dark-bright soliton for varying impurity momentum and interactions. Following an interspecies interaction quench the temporal orthogonality catastrophe is identified, provided that bath-impurity interactions are sufficiently stronger than the intraspecies bath ones, thus generalizing the results of the confined case. This catastrophe originates from the formation of dispersive shock wave structures associated with the zero-range character of the bath-impurity potential. For initially moving impurities, a momentum transfer process from the impurity to the dispersive shock waves via the exerted drag force is demonstrated, resulting in a final polaronic state with reduced velocity. Our results clearly demonstrate the crucial role of non-linear excitations for determining the behavior of the one-dimensional Bose polaron.

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