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Complex scaling in finite volume

Journal Article · · Physical Review. C
Quantum resonances, i.e., metastable states with a finite lifetime, play an important role in nuclear physics and other domains. Describing this phenomenon theoretically is generally a challenging task. In this work, we combine two established techniques to address this challenge. Complex scaling makes it possible to calculate resonances with bound-state-like methods. Finite-volume simulations exploit the fact that the infinite-volume properties of quantum systems are encoded in how discrete energy levels change as one varies the size of the volume. Herein we apply complex scaling to systems in finite periodic boxes and derive the volume dependence of states in this scenario, demonstrating with explicit examples how one can use these relations to infer infinite-volume resonance energies and lifetimes.
Research Organization:
North Carolina State University, Raleigh, NC (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE; USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
SC0013617; SC0024520; SC0024622
OSTI ID:
2342010
Alternate ID(s):
OSTI ID: 2473980
Journal Information:
Physical Review. C, Journal Name: Physical Review. C Journal Issue: 1 Vol. 109; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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