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 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

scholarly journals On the Geology of Castle-an-Dinas Wolfram Mine

1920 ◽  
Vol 57 (8) ◽  
pp. 347-351
Author(s):  
E. H. Davison
Keyword(s):  
The North ◽  
The One ◽  
Granite Mass

THERE are two hills named Castle-an-Dinas in West Cornwall, one near Penzance and the one on which the Wolfram Mine is situated, which lies about 2 miles east of St. Columb Major and about 4 miles to the north of the St. Austell granite mass.

The Schwinger terms and the gravitational anomaly

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

A discussion concerning the floor of the northwest Indian Ocean - Geophysical studies of the Seychelles Bank

1966 ◽  
Vol 259 (1099) ◽  
pp. 227-239 ◽  
Keyword(s):  
Indian Ocean ◽  
Magnetic Anomaly ◽  
Seismic Refraction ◽  
Central Area ◽  
Magnetic Anomalies ◽  
Gravity Measurements ◽  
Northern Edge ◽  
Mohorovičić Discontinuity ◽  
Granite Mass ◽  
Thick Crust

Geological studies of the islands on the Seychelles Bank, and the results of seismic refraction experiments made on the bank, are reviewed. They show that the crust is of continental type under the centre of the bank. Gravity measurements confirm that the thick crust extends to the northern edge of the bank and show that the Mohorovicic discontinuity slopes upward at an angle of about 19° under the peripheral cliff. Large narrow magnetic anomalies occurring in the central area of the bank are ascribed to minor intrusions of dolerite found in the Precambrian granites, and it is suggested that the edge of this area may mark the limit of the granite mass. Magnetic anomaly profiles of the Mascarene Ridge are similar to those over the Seychelles Bank and could result from a similar structure.

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.

V.—Note on the Association of Cassiterite and Specular Iron in the Lodes of Dartmoor

1909 ◽  
Vol 6 (9) ◽  
pp. 402-409 ◽  
Author(s):  
Donald A. MacAlister
Keyword(s):  
The West ◽  
Granite Mass

Situated in the neighbourhood of Birch Tor, in the heart of the granite mass of Dartmoor, at an elevation of between 1300 and 1400 feet, there are a number of tin-mines which have been worked fitfully from remote peridods (Fig. 1). The region is wild and lonely, and has in a marked degree all the scenic peculiarities of the moorland districts of the west of England.

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