scholarly journals Analog of Gravitational Anomaly in Topological Chiral Superconductors

JETP Letters ◽  
2021 ◽  
Author(s):  
G. E. Volovik
Keyword(s):  
Gravitational Anomaly

scholarly journals The UV fate of anomalous U(1)s and the Swampland

2020 ◽  
Vol 2020 (11) ◽  
Author(s):  
Nathaniel Craig ◽  
Isabel Garcia Garcia ◽  
Graham D. Kribs
Keyword(s):  
Quantum Gravity ◽  
Gauge Theories ◽  
Critical Size ◽  
Gauge Coupling ◽  
Low Energy ◽  
Gravitational Anomaly ◽  
Light Vector ◽  
Energy Theory ◽  
The Cost ◽  
Weak Gravity

Abstract Massive U(1) gauge theories featuring parametrically light vectors are suspected to belong in the Swampland of consistent EFTs that cannot be embedded into a theory of quantum gravity. We study four-dimensional, chiral U(1) gauge theories that appear anomalous over a range of energies up to the scale of anomaly-cancelling massive chiral fermions. We show that such theories must be UV-completed at a finite cutoff below which a radial mode must appear, and cannot be decoupled — a Stückelberg limit does not exist. When the infrared fermion spectrum contains a mixed U(1)-gravitational anomaly, this class of theories provides a toy model of a boundary into the Swampland, for sufficiently small values of the vector mass. In this context, we show that the limit of a parametrically light vector comes at the cost of a quantum gravity scale that lies parametrically below MP1, and our result provides field theoretic evidence for the existence of a Swampland of EFTs that is disconnected from the subset of theories compatible with a gravitational UV-completion. Moreover, when the low energy theory also contains a U(1)3 anomaly, the Weak Gravity Conjecture scale makes an appearance in the form of a quantum gravity cutoff for values of the gauge coupling above a certain critical size.

scholarly journals Gravitational anomaly and Hawking radiation near a weakly isolated horizon

2008 ◽  
Vol 77 (12) ◽  
Author(s):  
Xiaoning Wu ◽  
Chao-Guang Huang ◽  
Jia-Rui Sun
Keyword(s):  
Hawking Radiation ◽  
Gravitational Anomaly

scholarly journals Gravitational Anomaly and Transport Phenomena

2011 ◽  
Vol 107 (2) ◽  
Author(s):  
Karl Landsteiner ◽  
Eugenio Megías ◽  
Francisco Pena-Benitez
Keyword(s):  
Transport Phenomena ◽  
Gravitational Anomaly

The Schwinger terms and the gravitational anomaly

1986 ◽  
Vol 167 (4) ◽  
pp. 411-416 ◽  
Author(s):  
Mitsuyoshi Tomiya
Keyword(s):  
Gravitational Anomaly

scholarly journals ON ELEVATING FREE-FERMION Z2×Z2 ORBIFOLDS MODELS TO COMPACTIFICATIONS OF F THEORY

2000 ◽  
Vol 15 (09) ◽  
pp. 1345-1362 ◽  
Author(s):  
P. BERGLUND ◽  
J. ELLIS ◽  
A. E. FARAGGI ◽  
D. V. NANOPOULOS ◽  
Z. QIU
Keyword(s):  
Singular Points ◽  
Free Fermion ◽  
Gravitational Anomaly ◽  
Elliptic Fibrations ◽  
Common Framework ◽  
The Common ◽  
Six Dimensions

We study the elliptic fibrations of some Calabi–Yau threefolds, including the Z2×Z2 orbifold with (h1,1,h2,1)=(27, 3), which is equivalent to the common framework of realistic free-fermion models, as well as related orbifold models with (h1,1,h2,1)=(51, 3) and (31, 7). However, two related puzzles arise when one considers the (h1,1,h2,1)=(27, 3) model as an F theory compactification to six dimensions. The condition for the vanishing of the gravitational anomaly is not satisfied, suggesting that the F theory compactification does not make sense, and the elliptic fibration is well defined everywhere except at four singular points in the base. We speculate on the possible existence of N=1 tensor and hypermultiplets at these points which would cancel the gravitational anomaly in this case.

scholarly journals Refinement of parameters gravitational anomaly relative to the focal zone of the 2011 earthquake (Japan) based on satellite data

2021 ◽  
Vol 333 ◽  
pp. 02011
Author(s):  
Tatyana Rubleva ◽  
Konstantin Simonov ◽  
Valentin Kashkin ◽  
Anna Malkanova ◽  
Roman Odintsov
Keyword(s):  
Gravitational Field ◽  
Satellite Data ◽  
Gravitational Anomaly ◽  
Space System ◽  
Aftershock Activity ◽  
Focal Area ◽  
Focal Zone ◽  
Gravitational Anomalies

The aim of this work is to study gravitational anomalies that have arisen in the region of the sources of strong underwater earthquakes with a magnitude of Mw > 8. For this purpose, data obtained by the GRACE space system were used. Variations of the EWH program with a period of 30 days were investigated relative to the focal area of the 2011 Japanese earthquake for the period 2010-2012. It was found that during the preparation of an earthquake, the EWH values significantly increase in this area for three months, with aftershock activity, the EWH values decrease within a month. Maps of variations of the EWH parameter in the conditions of a disturbed geomedia and in background seismic conditions are constructed. The indices of the anomaly δEWH were calculated, which made it possible to analyze in more detail the local gravitational field for the investigated focal zone.

CORRELATION OF GRAVITY OBSERVATIONS WITH THE GEOLOGY OF THE SMOOTHINGIRON GRANITE MASS, LLANO COUNTY, TEXAS

Geophysics ◽  
1944 ◽  
Vol 9 (1) ◽  
pp. 79-93 ◽  
Author(s):  
Frederick Romberg ◽  
Virgil E. Barnes
Keyword(s):  
Gravitational Anomaly ◽  
Granite Mass

Gravitational observations were made, and the geology mapped, on the Smoothingiron granite mass in Llano County, Texas. The observed gravitational anomaly was interpreted to give depth and a subsurface shape for the mass. Maps are provided showing the gravity contours and the geology, and geological and mathematical appendices are added.

scholarly journals Fluid/Gravity Correspondence, Second Order Transport and Gravitational Anomaly,

2014 ◽  
Vol 66 ◽  
pp. 04018 ◽  
Author(s):  
Eugenio Megías ◽  
Francisco Pena-Benitez
Keyword(s):  
Second Order ◽  
Gravitational Anomaly
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