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arXiv · 1812.01763

Quantum aspects of self-interacting fields around cosmic strings

Kiyoshi Shiraishi·Satoru Hirenzaki
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Abstract

The authors study the quantum effect of self-interacting fields in the classical background of conical space, i.e. around a cosmic string with infinitesimal width. The renormalized value of $\langle\phi^2\rangle$ and energy-momentum tensor in the presence of cosmic strings are calculated in the self-interacting scalar field theory. The amount of condensation is also estimated in the case of the Dirac Lagrangian with the four-fermion interaction. The physical implications of the above analyses are discussed.

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Kiyoshi Shiraishi, Satoru Hirenzaki. 2018-12-05. Quantum aspects of self-interacting fields around cosmic strings. https://doi.org/10.1088/0264-9381%2F9%2F10%2F011

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