THE LONG-RANGE INTERACTION IN MASSLESS (λΦ4)4THEORY
2009 ◽
Vol 24
(04)
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pp. 261-271
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Does massless (λΦ4)4theory exhibit spontaneous symmetry breaking (SSB)? The raw one-loop result implies that it does, but the "RG-improved" result implies the opposite. We argue that the appropriate "low-energy effective theory" is a nonlocal field theory involving an attractive, long-range interaction Φ2(x)Φ2(y)/|x-y|4. RG improvement then requires running couplings for both this interaction and the original pointlike interaction. A crude calculation in this framework yields SSB even after "RG improvement" and closely agrees with the raw one-loop result.
2006 ◽
Vol 39
(22)
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pp. 7173-7173
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1975 ◽
Vol 17
(1)
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pp. 63-65
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Keyword(s):
2018 ◽
Vol 10
(1)
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pp. 01022-1-01022-5
Keyword(s):
2021 ◽
Vol 1762
(1)
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pp. 012016
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