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A model for the static weak-field macroscopic medium is analyzed and the equation for the macroscopic gravitational potential is derived. This is a biharmonic equation which is a non-trivial generalization of the Poisson equation of…

General Relativity and Quantum Cosmology · Physics 2009-11-10 Giovanni Montani , Remo Ruffini , Roustam Zalaletdinov

We derive the phase space density of bosons from a general boson interferometry formula. We find that the phase space density is connected with the two-particles and the single particle density distribution functions. If the boson density…

High Energy Physics - Phenomenology · Physics 2010-01-15 Q. H. Zhang , J. Barrette , C. Gale

Using the functional integral method, we construct a theory of heterotic SIS Josephson junctions between single- and two-gap superconductors. The theory predicts the presence of in-phase and out-of-phase collective oscillation modes of…

Superconductivity · Physics 2009-06-14 Yukihiro Ota , Masahiko Machida , Tomio Koyama , Hideki Matsumoto

We perform an analytical and numerical study of the crossover from the Josephson effect to the bulk superconducting flow for two identical one-dimensional superconductors, co-existing with a layer of normal material. A generalized…

Superconductivity · Physics 2025-10-20 Z. D. Genchev , T. L. Boyadjiev

We report on the experimental characterization of a spatially extended Josephson junction realized with a coherently-coupled two-spin-component Bose-Einstein condensate. The cloud is trapped in an elongated potential such that that…

Quantum Gases · Physics 2021-09-08 A. Farolfi , A. Zenesini , R. Cominotti , D. Trypogeorgos , A. Recati , G. Lamporesi , G. Ferrari

Recent refinements on a semiclassical approach are reviewed, aiming at describing the inhomogeneous local gap parameter in the presence of non-trivial spatial geometries and at taking into account at the same time pairing fluctuations…

Superconductivity · Physics 2024-10-08 Verdiana Piselli , Leonardo Pisani , Giancarlo Calvanese Strinati

We present \emph{c} axis infrared optical data on a number of Ba, Sr and Nd-doped cuprates of the La$_{2}$CuO$_{4}$ (La214) series in which we observe significant deviations from the universal Josephson relation linking the normal state…

Superconductivity · Physics 2011-05-30 A. A. Schafgans , C. C. Homes , G. D. Gu , Seiki Komiya , Yoichi Ando , D. N. Basov

The dissipative dynamics of a pointlike Josephson junction in binary Bose-condensed mixtures is analyzed within the framework of the model of a tunneling Hamiltonian. The transmission of unlike particles across a junction is described by…

Quantum Gases · Physics 2015-05-27 S. N. Burmistrov

In this publication a microscopic theory for the coupling of intrinsic Josephson oscillations in layered superconductors with longitudinal c-axis-phonons is developed. It is shown that the influence of lattice vibrations on the c-axis…

Superconductivity · Physics 2009-10-31 C. Helm , C. Preis , C. Walter , J. Keller

The general theory of a massless fermion coupled to a massive vector meson in two dimensions is formulated and solved to obtain the complete set of Green's functions. Both vector and axial vector couplings are included. In addition to the…

High Energy Physics - Theory · Physics 2009-10-28 C. R. Hagen

We consider an analog of the internal Josephson effect in superfluid atomic Fermi-gases. Four different hyperfine states of the atoms are assumed to be trapped and to form two superfluids via the BCS-type pairing. Weshow that Josephson…

Superconductivity · Physics 2009-11-07 Gh. -S. Paraoanu , M. Rodriguez , P. Torma

Massive electrodynamics for London's superconductivity and Josephson effect are derived. The propagation of massive boson inside a medium yields electric phenomena that are reflected in the Josephson effect. Critical force, magnetic field…

General Physics · Physics 2018-03-08 A. I. Arbab

The linear Boltzmann equation for elastic and/or inelastic scattering is applied to derive the distribution function of a spatially homogeneous system of charged particles spreading in a host medium of two-level atoms and subjected to…

Statistical Mechanics · Physics 2009-11-13 A. Rossani , A. M. Scarfone

Josephson transport through a single molecule or carbon nanotube is considered in the presence of a local vibrational mode coupled to the electronic charge. The ground-state solution is obtained exactly in the limit of a large…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 A. Zazunov , D. Feinberg , Thierry Martin

We analyze the universality of the bosonization rules in non-relativistic fermionic systems in $(2+1)d$. We show that, in the case of linear fermionic dispersion relations, a general fermionic theory can be mapped into a gauge theory in…

Strongly Correlated Electrons · Physics 2009-08-11 D. G. Barci , Cesar A. Linhares , J. F. Medeiros Neto , A. F. de Queiroz

A phenomenological theory is developed, that accounts for the collective dynamics of a Bose-Einstein condensate of magnons. In terms of such description we discuss the nature of spontaneous macroscopic interference between magnon clouds,…

Mesoscale and Nanoscale Physics · Physics 2014-07-03 Roberto E. Troncoso , Álvaro S. Núñez

We present a full microscopic theory based on the SU(2) covariant formulation of the quasiclassical formalism to describe the Josephson current through an extended superconductor-normal metal- superconductor (SNS) diffusive junction with an…

Superconductivity · Physics 2014-09-17 F. S. Bergeret , I. V. Tokatly

Motivated by recent progress in the superconductivity nonreciprocal phenomena, we study the general theory of Josephson diodes. The central ingredient for Josephson diodes is the asymmetric proximity process inside the tunneling barrier.…

Superconductivity · Physics 2022-11-04 Yi Zhang , Yuhao Gu , Pengfei Li , Jiangping Hu , Kun Jiang

Interest in Josephson junctions (JJs) has increased rapidly in recent years not only because of their use in qubits and other quantum devices but also due to the unique physics supported by the JJs. The advent of various novel quantum…

We report on transport properties of Josephson junctions in hybrid superconducting-topological insulator devices, which show two striking departures from the common Josephson junction behavior: a characteristic energy that scales inversely…