Effect of particle-particle interaction on dielectrophoretic single particle trap in a sudden contraction flow

The nonlinear Luttinger liquid phenomenology of one-dimensional correlated Fermi systems is an attempt to describe the effect of the band curvature beyond the Tomonaga-Luttinger liquid paradigm. It relies on the observation that the dynamical structure factor of the interacting electron gas shows a logarithmic threshold singularity when evaluated to first order perturbation theory in the two-particle interaction. This term was interpreted as the linear one in an expansion which was conjectured to resum to a power law. A field theory, the mobile impurity model, which is constructed such that it provides the power law in the structure factor, was suggested to be the proper effective model and used to compute the single-particle spectral function. This forms the basis of the nonlinear Luttinger liquid phenomenology. Surprisingly, the second order perturbative contribution to the structure factor was so far not studied. We first close this gap and show that it is consistent with the conjectured power law. Secondly, we critically assess the steps leading to the mobile impurity Hamiltonian. We show that the model does not allow to include the effect of the momentum dependence of the (bulk) two-particle potential. This dependence was recently shown to spoil power laws in the single-particle spectral function which previously were believed to be part of the Tomonaga-Luttinger liquid universality. Although our second order results for the structure factor are consistent with power-law scaling, this raises doubts that the conjectured nonlinear Luttinger liquid phenomenology can be considered as universal. We conclude that more work is required to clarify this.

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The single-particle interaction in nuclear matter via the relativistic Dirac-Brueckner approach

Physics Letters B ◽

10.1016/0370-2693(86)90207-8 ◽

1986 ◽

Vol 172 (1) ◽

pp. 10-16 ◽

Cited By ~ 45

Author(s):

Bernard ter Haar ◽

Rudi Malfliet

Keyword(s):

Nuclear Matter ◽

Single Particle ◽

Particle Interaction

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Core-particle interaction and fragmentation of single-particle levels in 41Ca and 41Sc

Nuclear Physics A ◽

10.1016/0375-9474(69)90004-9 ◽

1969 ◽

Vol 135 (3) ◽

pp. 545-560 ◽

Cited By ~ 21

Author(s):

P. Federman ◽

G. Greek ◽

E. Osnes

Keyword(s):

Single Particle ◽

Particle Interaction ◽

Core Particle

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High Resolution Microanalysis of Particles from the Human Lung

Microscopy and Microanalysis ◽

10.1017/s1431927600015324 ◽

1999 ◽

Vol 5 (S2) ◽

pp. 400-401

Author(s):

David C. Bell ◽

Lenore C. Rainey ◽

John B. Vander Sande

Keyword(s):

Electron Microscopy ◽

Transmission Electron Microscopy ◽

High Resolution ◽

Single Particle ◽

Human Lung ◽

Statistical Significance ◽

Particle Interaction ◽

The Body ◽

Transmission Electron ◽

Scanning Transmission

Every time we take a breath, we are inhaling the results of twentieth century combustion technology. Combustion processes generally produce a multitude of soot and other sub micron sized particulates. The human lungs, via the process of cilia movement expel most of these particles; others are broken down with the aid of macrophage agents. These macrophages absorb particles and incorporate the constitute elements into our bodies. These elements maybe expelled, or they may remain in the body and accumulate over time, as is the case with certain heavy metals. Limited prior research on ‘single-particle’ interaction with lung or bronchial tissue has been conducted. Related research has focused on the statistical significance of soot inhalation on the lung tissue of rodents and primates [1]. Using the methods of single particle examination, founded by previous research into single particle source allocation [2], the examination particles of from human lung and bronchial tissues was performed.Research on the particle characterization shown here is based on the application of an innovative method developed at MIT, which utilized high resolution transmission electron microscopy (HRTEM), scanning transmission electron microscopy (STEM) coupled with electron energy loss spectroscopy (EELS) and energy dispersive X-ray analysis (EDX).

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Spin symmetry energy and spin dependence of the single particle potential in nuclear matter

Canadian Journal of Physics ◽

10.1139/p84-057 ◽

1984 ◽

Vol 62 (4) ◽

pp. 400-413 ◽

Cited By ~ 11

Author(s):

Janusz Dabrowski

Keyword(s):

Nuclear Matter ◽

Single Particle ◽

Particle Interaction ◽

Spin Symmetry ◽

Particle Energy ◽

Nuclear Forces ◽

Fermi Surfaces ◽

Particle Potential ◽

Single Particle Potential ◽

Spin Quantization

In the presence of tensor nuclear forces, the single particle energy in spin and spin–isospin polarized nuclear matter is diagonal in nucleon spin states with the spin quantization axis tilting away from the direction in which nuclear matter is polarized. This tilting of nucleon spins is taken into account in determining the shape of Fermi surfaces in spin and spin–isospin polarized nuclear matter, and in relating the spin and spin–isospin dependent components of the single particle potential, and the spin and spin–isospin symmetry energies of nuclear matter to the Landau parameters of the quasi-particle interaction. Numerical results are obtained partly with empirical values of the Landau parameters, and partly with values calculated with the Sprung effective two-body interaction in nuclear matter.

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