1. The semiclassical energy density of kinks and solitons
- Author
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Martin, Maria Angeles Alberti, Schlesier, Robert, and Zahn, Jochen
- Subjects
High Energy Physics - Theory ,General Relativity and Quantum Cosmology - Abstract
We compute semiclassical corrections to the energy density of kinks in $\phi^4$ theory and of solitons in the sine-Gordon model in $1+1$ dimensions, using local and covariant renormalization techniques from quantum field theory in curved spacetimes. For the semiclassical correction to the energy, we recover the known results. Our analysis highlights a subtlety in the definition of a conserved stress tensor for scalar field theories in $1+1$ dimension., Comment: 20 pages; Mathematica notebooks containing the relevant calculations as ancillary files; v3: final version
- Published
- 2022
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