Casimir-like effect from thermal field fluctuations

Venkat Abhignan; R. Sankaranarayanan

doi:10.1007/s13538-021-00976-7

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arXiv · 2004.05064

Casimir-like effect from thermal field fluctuations

Venkat Abhignan·R. Sankaranarayanan

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Abstract

Landau-Ginzburg $\phi^4$ field theory is usually applied to systems for understanding continuous phase transitions at critical points. Here we analyze the thermal field using a similar free energy description from a statistical field theory perspective, and study fluctuations in such a field with a particular focus on realizing the thermal Casimir effect. Initially, we qualitatively describe the emergence of the Casimir-like effect using mean-field approximation and further derive it using coarse-graining of perturbative renormalization procedure in the vicinity of Gaussian-fixed point. These results may lead to further the understanding of the Casimir effect from scalar fields without employing the concept of zero-point energy in a cosmological sense.

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BibTeX RIS

Venkat Abhignan, R. Sankaranarayanan. 2020-04-10. Casimir-like effect from thermal field fluctuations. https://doi.org/10.1007/s13538-021-00976-7

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