Results 31 to 40 of about 135,037 (159)

Anomalies involving the space of couplings and the Zamolodchikov metric

Journal of High Energy Physics, 2017
The anomaly polynomial of a theory can involve not only curvature two-forms of the flavor symmetry background but also two-forms on the space of coupling constants.
Yuji Tachikawa
doaj   +1 more source

Anomaly interplay in U(2) gauge theories

Journal of High Energy Physics, 2020
We discuss anomaly cancellation in U(2) gauge theories in four dimensions. For a U(2) gauge theory defined with a spin structure, the vanishing of the bordism group Ω 5 Spin $$ {\Omega}_5^{\mathrm{Spin}} $$ (BU(2)) implies that there can be no global ...
Joe Davighi, Nakarin Lohitsiri
doaj   +1 more source

Thermodynamics, gravitational anomalies and cones [PDF]

JHEP 1302 (2013) 088, 2012
By studying the Euclidean partition function on a cone, we argue that pure and mixed gravitational anomalies generate a "Casimir momentum" which manifests itself as parity violating coefficients in the hydrodynamic stress tensor and charge current.
arxiv   +1 more source

Weakly Supervised Anomaly Detection for Chest X-Ray Image [PDF]

arXiv, 2023
Chest X-Ray (CXR) examination is a common method for assessing thoracic diseases in clinical applications. While recent advances in deep learning have enhanced the significance of visual analysis for CXR anomaly detection, current methods often miss key cues in anomaly images crucial for identifying disease regions, as they predominantly rely on ...
arxiv  

Anomaly matching in QCD thermal phase transition

Journal of High Energy Physics, 2019
We study an ’t Hooft anomaly of massless QCD at finite temperature. With the imaginary baryon chemical potential at the Roberge-Weiss point, there is a ℤ2 symmetry which can be used to define confinement.
Kazuya Yonekura
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Anomaly inflow and holography

Journal of High Energy Physics, 2021
We systematically study the perturbative anomaly inflow by the bulk Chern-Simons (CS) theory in a slice of five-dimensional anti-de Sitter spacetime (AdS5).
Sungwoo Hong, Gabriele Rigo
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Localized anomalies in orbifold gauge theories [PDF]

Phys.Rev. D68 (2003) 105002, 2003
We apply the path-integral formalism to compute the anomalies in general orbifold gauge theories (including possible non-trivial Scherk-Schwarz boundary conditions) where a gauge group G is broken down to subgroups H_f at the fixed points y=y_f. Bulk and localized anomalies, proportional to \delta(y-y_f), do generically appear from matter propagating ...
arxiv   +1 more source

Factor Analysis of Mixed Data for Anomaly Detection [PDF]

arXiv, 2020
Anomaly detection aims to identify observations that deviate from the typical pattern of data. Anomalous observations may correspond to financial fraud, health risks, or incorrectly measured data in practice. We show detecting anomalies in high-dimensional mixed data is enhanced through first embedding the data then assessing an anomaly scoring scheme.
arxiv  

A Potential Reason for a More CP El Nino‐Like SSTA Performance in CMIP6 Simulations

Geophysical Research Letters, 2023
A systematic bias of the extremely westward zonal current (EWZC) was revealed over the equatorial Pacific in Coupled Model Intercomparison Project 6 (CMIP6) models.
Li‐Chiao Wang, Yu‐Shen Lin
doaj   +1 more source

Experimental signatures of the mixed axial-gravitational anomaly in the Weyl semimetal NbP [PDF]

Nature 547, 324 (2017), 2017
Weyl semimetals are materials where electrons behave effectively as a kind of massless relativistic particles known asWeyl fermions. These particles occur in two flavours, or chiralities, and are subject to quantum anomalies, the breaking of a conservation law by quantum fluctuations.
arxiv   +1 more source