Corpus ID: 233482009

Topological effects in fermion condensate induced by cosmic string and compactification on AdS bulk

@inproceedings{Bellucci2021TopologicalEI,
  title={Topological effects in fermion condensate induced by cosmic string and compactification on AdS bulk},
  author={Stefano Bellucci and W. Oliveira dos Santos and E. R. Bezerra Mello and A. A. Saharian},
  year={2021}
}
We investigate the fermion condensate (FC) for a massive spinor field on background of the 5-dimensional locally anti-de Sitter (AdS) spacetime with a compact dimension and in the presence of a cosmic string carrying a magnetic flux. The FC is decomposed into two contributions. The first one corresponds to the geometry without compactification and the second one is induced by the compactification. Depending on the values of the parameters, the total FC can be either positive or negative. As a… Expand
1 Citations

Figures from this paper

Fermionic vacuum polarization around a cosmic string in compactified AdS spacetime
We investigate topological effects of a cosmic string and compactification of a spatial dimension on the vacuum expectation value (VEV) of the energy-momentum tensor for a fermionic field inExpand

References

SHOWING 1-10 OF 72 REFERENCES
W
  • Oliveira dos Santos, E.R. Bezerra de Mello, Induced fermionic current in AdS spacetime in the presence of a cosmic string and a compactified dimension. Eur. Phys. J. C 80, 963
  • 2020
Casimir Effect for Fermion Condensate in Conical Rings
The fermion condensate (FC) is investigated for a (2+1)-dimensional massive fermionic field confined on a truncated cone with an arbitrary planar angle deficit and threaded by a magnetic flux.Expand
Interacting Fermions
  • A. Wipf
  • Statistical Approach to Quantum Field Theory
  • 2021
Fermion condensation induced by the Weyl anomaly
Fermi condensation is usually a phenomena of strongly correlated system. In this letter, we point out a novel mechanism for condensation of Dirac fermions due to Weyl anomaly. The condensation hasExpand
Fermionic vacuum currents in topologically nontrivial braneworlds: Two-brane geometry
The vacuum expectation value (VEV) of the fermionic current density is investigated in the geometry of two parallel branes in locally AdS spacetime with a part of spatial dimensions compactified to aExpand
Induced fermionic current in AdS spacetime in the presence of a cosmic string and a compactified dimension
In this paper, we consider a massive charged fermionic quantum field and investigate the current densities induced by a magnetic flux running along the core of an idealized cosmic string in theExpand
Quantum Vacuum Effects in Braneworlds on AdS Bulk
We review the results of investigations for brane-induced effects on the local properties of quantum vacuum in background of AdS spacetime. Two geometries are considered: a brane parallel to the AdSExpand
Vacuum fermionic currents in braneworld models on AdS bulk with a cosmic string
We investigate the effects of a brane and magnetic-flux-carrying cosmic string on the vacuum expectation value (VEV) of the current density for a charged fermionic field in the background geometry ofExpand
Vacuum polarization in high-dimensional AdS space-time in the presence of a cosmic string and a compactified extra dimension
In this paper, we analyze the vacuum expectation values (VEVs) of the field squared and the energy–momentum tensor associated with a charged and massive scalar quantum field in a generalizedExpand
Weyl anomaly induced Fermi condensation and holography
Recently it is found that, due to Weyl anomaly, a background scalar field induces a non-trivial Fermi condensation for theories with Yukawa couplings. For simplicity, the paper consider only scalarExpand
...
1
2
3
4
5
...