ANOMALOUS DIMENSIONS AT LARGE CHARGE IN d=4 O(N) THEORY
Recently it was shown that the scaling dimension of the operator phi(n) in lambda((phi) over bar phi)(2) theory may be computed semiclassically at the Wilson-Fisher fixed point in d = 4 - epsilon, for generic values of lambda n, and this was verified to two-loop order in perturbation theory at leadi...
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| Veröffentlicht in: | Acta physica Polonica, B B, 2021-01, Vol.52 (6-7), p.823-839 |
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| container_title | Acta physica Polonica, B |
| container_volume | 52 |
| creator | Jack Jones, D. R. T. |
| description | Recently it was shown that the scaling dimension of the operator phi(n) in lambda((phi) over bar phi)(2) theory may be computed semiclassically at the Wilson-Fisher fixed point in d = 4 - epsilon, for generic values of lambda n, and this was verified to two-loop order in perturbation theory at leading and subleading n. In subsequent work, this result was generalised to operators of fixed charge (Q) over bar in O(N) theory and verified up to three loops in perturbation theory at leading and subleading (Q) over bar . Here, we extend this verification to four loops in O(N) theory, once again at leading and subleading (Q) over bar . We also investigate the strong-coupling regime. |
| doi_str_mv | 10.5506/APhysPolB.52.823 |
| format | Article |
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R. T.</creatorcontrib><title>ANOMALOUS DIMENSIONS AT LARGE CHARGE IN d=4 O(N) THEORY</title><title>Acta physica Polonica, B</title><addtitle>ACTA PHYS POL B</addtitle><description>Recently it was shown that the scaling dimension of the operator phi(n) in lambda((phi) over bar phi)(2) theory may be computed semiclassically at the Wilson-Fisher fixed point in d = 4 - epsilon, for generic values of lambda n, and this was verified to two-loop order in perturbation theory at leading and subleading n. In subsequent work, this result was generalised to operators of fixed charge (Q) over bar in O(N) theory and verified up to three loops in perturbation theory at leading and subleading (Q) over bar . Here, we extend this verification to four loops in O(N) theory, once again at leading and subleading (Q) over bar . 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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Web of Science - Science Citation Index Expanded - 2021<img src="https://exlibris-pub.s3.amazonaws.com/fromwos-v2.jpg" /> |
| subjects | Physical Sciences Physics Physics, Multidisciplinary Science & Technology |
| title | ANOMALOUS DIMENSIONS AT LARGE CHARGE IN d=4 O(N) THEORY |
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