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Vacuum stability and vacuum excitation in a spin-0 field theory
Abstract
The theoretical possibility that in a limited domain in space the expectation value $〈\ensuremath{\varphi}(x)〉$ of a neutral spin-0 field may be abnormal (that is to say quite different from its normal vacuum expectation value) is investigated. It is shown that if the ${\ensuremath{\varphi}}^{3}$ coupling is sufficiently large, then such a configuration can be metastable, and its physical size may become substantially greater than the usual microscopic dimension in particle physics. Furthermore, independent of the strength of the ${\ensuremath{\varphi}}^{3}$ coupling, if $\ensuremath{\varphi}(x)$ has sufficiently strong scalar interaction with the nucleon field, the state that has an abnormal $〈\ensuremath{\varphi}(x)〉$ inside a very heavy nucleus can become the minimum-energy state, at least within the tree approximation; in such a state, the "effective" nucleon mass inside the nucleus may be much lower than the normal value. Both possibilities may lead to physical systems that have not yet been observed.
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Citations
Cited by
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Adcox, K., Adler, S. S., Afanasiev, S., Aidala, C., Ajitanand, N. N., Akiba, Y., Al-Jamel, A., Alexander, J., Amirikas, R., Aoki, K., et al. (2005) · Nuclear Physics A · doi:10.1016/j.nuclphysa.2005.03.086 · Cited by 3,025
“Even prior to the identification of Quantum Chromodynamics (QCD) as the underlying theory of the strong interaction, there was considerable interest in the fate of nuclear matter when subjected to density and temperature extremes [1], [2,3].”
BackgroundNew forms of QCD matter discovered at RHIC
Gyulassy, M., & McLerran, L. (2005) · Nuclear Physics A · doi:10.1016/j.nuclphysa.2004.10.034 · Cited by 1,122
Chiral Symmetry and the BAG Model: A New Starting Point for Nuclear Physics
Thomas, A. W. (1984) · Advances in Nuclear Physics · doi:10.1007/978-1-4613-9892-9_1 · Cited by 414
THE SEARCH FOR THE QUARK-GLUON PLASMA
Harris, J. W., & Müller, B. (1996) · Annual Review of Nuclear and Particle Science · doi:10.1146/annurev.nucl.46.1.71 · Cited by 317
Metadata
- Authors
- Lee, T. D., & Wick, G. C.
- Venue
- Physical Review D
- Publisher
- American Physical Society (APS)
- Published
- 1974-04-15
- Volume
- 9
- Issue
- 8
- Pages
- 2291-2316
- ISSN
- 0556-2821 (ISSN-L)
- OpenAlex
- W2170220009
- Cited by
- 592
- References
- 0
- FWCI
- 29.78
- Type
- journal article
- Language
- en
- Open access
- closed
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- Lee, T. D., & Wick, G. C. (1974). Vacuum stability and vacuum excitation in a spin-0 field theory. Physical Review D. https://doi.org/10.1103/physrevd.9.2291
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