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Anomaly (physics)

About: Anomaly (physics) is a(n) research topic. Over the lifetime, 11487 publication(s) have been published within this topic receiving 212946 citation(s). The topic is also known as: quantum anomaly.

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Journal ArticleDOI
13 Jun 1988-Nuclear Physics
Abstract: We discuss the cosmological constant problem in the light of dilatation symmetry and its possible anomaly. For dilatation symmetric quantum theories realistic asymptotic cosmology is obtained provided the effective potential has a nontrivial minimum. For theories with dilatation anomaly one needs as a nontrivial “cosmon condition” that the energy-momentum tensor in the vacuum is purely anomalous. Such a condition is related to the short distance renormalization group behaviour of the fundamental theory. Observable deviations from the standard hot big bang cosmology are possible.

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2,326 citations


Journal ArticleDOI
Abstract: We discuss the cosmological constant problem in the light of dilatation symmetry and its possible anomaly. For dilatation symmetric quantum theories realistic asymptotic cosmology is obtained provided the effective potential has a non-trivial minimum. For theories with dilatation anomaly one needs as a non-trivial "cosmon condition" that the energy-momentum tensor in the vacuum is purely anomalous. Such a condition is related to the short-distance renormalization group behavior of the fundamental theory. Observable deviations from the standard hot big bang cosmology are possible.

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1,699 citations


Journal ArticleDOI
31 Oct 2008-Physical Review D
Abstract: Topological charge changing transitions can induce chirality in the quark-gluon plasma by the axial anomaly. We study the equilibrium response of the quark-gluon plasma in such a situation to an external magnetic field. To mimic the effect of the topological charge changing transitions we will introduce a chiral chemical potential. We will show that an electromagnetic current is generated along the magnetic field. This is the chiral magnetic effect. We compute the magnitude of this current as a function of magnetic field, chirality, temperature, and baryon chemical potential.

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1,531 citations


Journal ArticleDOI
Gordon W. Semenoff1Institutions (1)
Abstract: A condensed-matter analog of (2+1)-dimensional electrodynamics is constructed, and the consequences of a recently discovered anomaly in such systems are discussed.

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1,454 citations


Journal ArticleDOI
Abstract: In models with dynamical supersymmetry breaking in the hidden sector, the gaugino masses in the observable sector have been believed to be extremely suppressed (below 1 keV), unless there is a gauge singlet in the hidden sector with specific couplings to the observable sector gauge multiplets. We point out that there is a pure supergravity contribution to gaugino masses at the quantum level arising from the superconformal anomaly. Our results are valid to all orders in perturbation theory and are related to the ‘exact’ beta functions for soft terms. There is also an anomaly contribution to the A terms proportional to the beta function of the corresponding Yukawa coupling. The gaugino masses are proportional to the corresponding gauge beta functions, and so do not satisfy the usual GUT relations.

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1,150 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20228
2021701
2020565
2019533
2018527
2017449

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Topic's top 5 most impactful authors

Yuji Tachikawa

19 papers, 1.1K citations

Michael Martin Nieto

15 papers, 373 citations

Armen Oganesian

14 papers, 43 citations

Claudio Corianò

14 papers, 302 citations

Burt A. Ovrut

12 papers, 428 citations