Publications

Citation

BibTex format

@article{Borissova:2026:03/072,
author = {Borissova, J and Magueijo, J},
doi = {03/072},
journal = {Journal of Cosmology and Astroparticle Physics},
pages = {072--072},
title = {Quantum dynamics and thermodynamics of a Minkowski-Minkowski wormhole},
url = {http://dx.doi.org/10.1088/1475-7516/2026/03/072},
volume = {2026},
year = {2026}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - <jats:title>Abstract</jats:title>                  <jats:p>We consider the path-integral quantization of a minisuperspace cut-and-paste Lorentzian wormhole connecting two Minkowski spacetimes. The dynamics of the throat radius as a function of proper time is governed by a non-polynomial effective action derived by an application of the Israel junction condition formalism. Within a saddle-point approximation of the propagator describing the evolution from an initial to a final throat radius, we show that topology-changing transitions are suppressed by the Hessian determinant. In addition, we analyze the gravitational thermodynamics of the wormhole spacetime by a Wick rotation of the Israel-Lanczos equations in the presence of a thin-shell source. The resulting Euclideanized field equations are assumed to originate from a Euclidean effective gravity-matter action, which enters the path-integral representation of the gravitational canonical partition function. Therefrom we associate a temperature given by the inverse period of solutions, as well as a gravitational entropy as functions of the surface energy density and equation of state parameter of the shell. Both quantities are sourced entirely by the discontinuity of the extrinsic curvature across the junction. We show how this result can be applied to deduce a thermodynamic first law as the differential version of the conservation equation relating the effective mass of the shell to its surface pressure.</jats:p>
AU  - Borissova,J
AU  - Magueijo,J
DO  - 03/072
EP  - 072
PY  - 2026///
SP  - 072
TI  - Quantum dynamics and thermodynamics of a Minkowski-Minkowski wormhole
T2  - Journal of Cosmology and Astroparticle Physics
UR  - http://dx.doi.org/10.1088/1475-7516/2026/03/072
UR  - https://doi.org/10.1088/1475-7516/2026/03/072
VL  - 2026
ER  -
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