Abstract
We calculate quantum corrections to the vacuum energy inλφ 4 theory with a tachyonic mass term in a half space, where the scalar field is required to satisfy the Dirichlet boundary condition on the surface. It is found that the one-loop self-energy diagram includes a finite energy portion, representing a repulsive surface tension on the boundary.
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Adachi, S. One-loop surface tension on a boundary inλφ 4 theory. Z. Phys. C - Particles and Fields 49, 585–590 (1991). https://doi.org/10.1007/BF01483574
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DOI: https://doi.org/10.1007/BF01483574