Summary
We study the vacuum structure of theφ 4 theory in de Sitter space. We give the condition for the occurrence of vacuum degeracy and spontaneous symmetry breaking bothly in classical and quantized theories. We also give the wave function for each vacuum.
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Wang, M.J. Spontaneous symmetry breaking in de Sitter space. Nuov Cim A 104, 1001–1006 (1991). https://doi.org/10.1007/BF02813355
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DOI: https://doi.org/10.1007/BF02813355