Superconductor in static gravitational, electric and magnetic fields with vortex lattice

Ummarino, Giovanni; Gallerati, Antonio

doi:10.1016/j.rinp.2021.104838

Cited by 6 publications

(7 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Let us now consider the useful introduced dimensionless formulation. Working in the dimensionless version of the chosen Coulomb gauge ∇ • A = 0 it is possible to write a first-order expression for the dimensionless order parameter satisfying a linearized form for adimensional TDGL Equation (108) as [132]:…”

Section: Dimensionless Frameworkmentioning

confidence: 99%

Superconductors and Gravity

Gallerati

Ummarino

2022

Symmetry

Self Cite

View full text Add to dashboard Cite

We review and discuss some recent developments on the unconventional interaction between superconducting systems and the local gravitational field. While it is known that gravitational perturbations (such as gravitational waves) can affect supercondensates and supercurrents dynamics, we want to focus here on the more subtle superfluid back-reaction acting on the surrounding gravitational field, analysing some specific favourable situations. To this end, we will consider suitable quantum macrosystems in a coherent state, immersed in the static weak Earth’s gravitational field, investigating possible slight local alterations of the latter not explained in terms of classical physics.

show abstract

Section: Dimensionless Frameworkmentioning

confidence: 99%

Superconductors and Gravity

Gallerati

Ummarino

2022

Symmetry

Self Cite

View full text Add to dashboard Cite

show abstract

“…Inspired by the experimental effects of gravitational fields on superfluids and supercurrents, Ummarino and Gallerati considered the possible back-reaction of the latter on the surrounding local gravitational field in some specific, favourable situations [90,91,93,94,147]. In particular, they analysed how the local gravitational field can be affected by the presence of a supercondensate, exploiting the time-dependent Ginzburg-Landau equations [148] in the regime of fluctuations [91] and in a more general situation [93,94]. Physical situations which cannot be consistently described in terms of the quasiparticle method or the mean field approximation are called fluctuations [149].…”

Section: Gravitational Field Outside the Sample Fluctuations Regimementioning

confidence: 99%

“…A more general situation was studied by Ummarino and Gallerati in [94], considering a superconducting sample with finite thickness L and very large dimensions along the other orthogonal directions. The sample is immersed in an external magnetic field B 0 B 0 u z and has a square lattice of vortices, whose axes are directed along the magnetic field, and a constant external (standard) electric field E 0 E 0 u x with the same direction of the gravitational field.…”

Section: Switching On Em Fields Vortex Latticementioning

confidence: 99%

“…Working in the Coulomb gauge, it is possible to write a firstorder expression for the dimensionless order parameter, satisfying linearized dimensionless TDGL equations, as [94]:…”

Section: Switching On Em Fields Vortex Latticementioning

confidence: 99%

“…from which it is possible to extract the predicted, temporary alteration and reduction of the local field [94]. Sample dimensions and chemical composition play a key role in maximizing the effects on the local gravitational field.…”

Section: Switching On Em Fields Vortex Latticementioning

confidence: 99%

See 2 more Smart Citations

Interaction Between Macroscopic Quantum Systems and Gravity

2022

View full text Add to dashboard Cite

We review experiments and theoretical models about the possible mutual interplay between the gravitational field and materials in the superconducting state or other macroscopic quantum states. More generally, we focus on the possibility for quantum macrosystems in a coherent state to produce local alterations of the gravitational field in which they are immersed. This fully interdisciplinary research field has witnessed a conspicuous progress in the last decades, with hundreds of published papers, and yet several questions are still completely open.

show abstract

Graphene, Dirac equation and analogue gravity

Gallerati¹

2022

Phys. Scr.

Self Cite

View full text Add to dashboard Cite

We provide an updated study of some electronic properties of graphene nanoscrolls, exploiting a related curved space Dirac equation for the charge carriers. To this end, we consider an explicit parametrization in cylindrical coordinates, together with analytical solutions for the pseudoparticle modes living on the two–dimensional background. These results are then used to obtain a compact expression for the sample optical conductivity, deriving from a Kubo formula adapted to the 1+2 dimensional curved space. The latter formulation is then adopted to perform some simulations for a cylindrical nanoscroll geometry.

show abstract

Superconductor in static gravitational, electric and magnetic fields with vortex lattice

Cited by 6 publications

References 68 publications

Superconductors and Gravity

Superconductors and Gravity

Interaction Between Macroscopic Quantum Systems and Gravity

Graphene, Dirac equation and analogue gravity

Contact Info

Product

Resources

About