Renormalized Coulomb-gauge self-energy function

An electron tunneling investigation has been carried out on quench-condensed Bi, Ga, Pb, Pb∙75Bi∙25, Pb∙50Bi∙50, and Pb∙25Bi∙75. The energy gap and transition temperature have been measured for each sample. The tunneling derivative data have been analyzed in terms of the strong-coupling theory of superconductivity by means of a computer program of W. L. McMillan. The effective phonon spectrum, the Coulomb pseudopotential, the complex energy gap function, the pairing self-energy function, and the electron renormalization function have been determined for each sample. Certain parameters based on integrals over the phonon spectrum have also been calculated for each sample.

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The influence of the nuclear self energy function on the spectral lines of atoms with unstable nuclei

Journal of Physics Conference Series ◽

10.1088/1742-6596/714/1/012008 ◽

2016 ◽

Vol 714 ◽

pp. 012008

Author(s):

R Kh Gainutdinov ◽

A A Mutygullina ◽

A S Petrova

Keyword(s):

Energy Function ◽

Spectral Lines ◽

Self Energy ◽

Unstable Nuclei

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Coulomb Gauge Quantization and Renormalization of the Chern–Simons Theory Coupled to Fermions

International Journal of Modern Physics A ◽

10.1142/s0217751x97001596 ◽

1997 ◽

Vol 12 (16) ◽

pp. 2889-2901 ◽

Cited By ~ 6

Author(s):

M. Fleck ◽

A. Foerster ◽

H. O. Girotti ◽

M. Gomes ◽

J. R. S. Nascimento ◽

...

Keyword(s):

Coulomb Gauge ◽

The Self ◽

Simons Theory ◽

Fermion Propagator ◽

Lorentz Covariance ◽

Self Energy ◽

The One ◽

Chern Simons ◽

Physical Quantities ◽

Chern Simons Theory

We study the quantization and the one-loop renormalization of the model resulting from the coupling of charged fermions with a Chern–Simons field, in the Coulomb gauge. A proof of the Lorentz covariance of the physical quantities follows after establishing the Dirac–Schwinger algebra for the Poincaré densities and the transformation properties of the fields under the Poincaré group. The Coulomb gauge one-loop renormalization program is, afterwards, implemented. The noncovariant form of the one-loop fermion propagator, Chern–Simons field propagator and the vertex are explicitly obtained. Finally, the electron anomalous magnetic moment is calculated stressing that, due to the peculiarities of the Coulomb gauge, the contributions from the self-energy diagrams turn out to be essential.

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NEGF-based models for dephasing in quantum transport

10.1093/oxfordhb/9780199533046.013.3 ◽

2017 ◽

Author(s):

Roksana Golizadeh-Mojarad ◽

Supriyo Datta

Keyword(s):

Quantum Transport ◽

Wide Class ◽

Energy Function ◽

The Self ◽

Self Energy ◽

Different Types ◽

Momentum Relaxation ◽

Spin Devices ◽

Non Equilibrium Green’S Function ◽

General Method

This article describes the use of NEGF-based models for elastic dephasing in quantum transport. The non-equilibrium Green's function (NEGF) method provides a rigorous prescription for including any kind of dephasing mechanisms to any order starting from a microscopic Hamiltonian through an appropriate choice of the self-energy function. The article first introduces the general approach to quantum transport that provides a general method for modelling a wide class of nanotransistor and spin devices. It then discusses the effect of different types of dephasing on momentum and spin relaxation before considering three simple phenomenological choices of the self-energy function that allows one to incorporate spin, phase and momentum relaxation independently. It also looks at an example that takes into account these three types of dephasing mechanisms: the ‘spin-Hall’ effect.

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