DOE OSTI · 3009280
Nonperturbative Lorentz violation and field quantization
Abstract
Regimes of Lorentz-violating effective field theories are studied in which departures from Lorentz symmetry are nonperturbative. Within a free toy theory exhibiting Lorentz breakdown involving an operator of mass dimension three, it is shown that conventional methods suffice to achieve field quantization and Fock-space construction. However, the absence of an observer-invariant energy-positivity condition requires physical input beyond the free theory for the unambiguous identification of a ground state. An investigation of the role of thermodynamics in this context is instigated.
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Alan Kostelecký, V. [Indiana Univ., Bloomington, IN (United States). Center for Spacetime Symmetries] (ORCID:0000000316108094), Lehnert, Ralf [Indiana Univ., Bloomington, IN (United States). Center for Spacetime Symmetries] (ORCID:0000000329144350), Schreck, Marco [Federal Univ. of Maranhão (Brazil)] (ORCID:0000000165854144), Seradjeh, Babak [Indiana Univ., Bloomington, IN (United States). Center for Spacetime Symmetries; Indiana Univ., Bloomington, IN (United States). Quantum Science and Engineering Center] (ORCID:0000000318348286). 2025-03-26. Nonperturbative Lorentz violation and field quantization. https://doi.org/10.1016/j.physletb.2025.139414
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