Introduction: Surface gravity surveying is a well developed terrestrial geophysical technique, used to detect subsurface density variations, which in turn can reveal subsurface geologic features. Here we perform a feasibility study to determine what major science questions can be answered by a rover-mounted, highly compact gravimeter and gravity gradiometer being designed by Gedex Inc.; a Toron...

A bstract We present a gravity dual of local operator quench in two-dimensional CFT with conformal boundaries. This is given by massive excitation three-dimensional AdS space the end world brane (EOW brane). Due to gravitational backreaction, EOW gets deformed nontrivial way. show that energy-momentum tensor and entanglement entropy computed from BCFT large c limit match perfectly. Interestingl...

Abstract—Gravity field is of great significance in geoscience, national economy and national security, and gravitational gradient measurement has been extensively studied due to its higher accuracy than gravity measurement. Gravity gradient sensor, being one of core devices of the gravity gradient instrument, plays a key role in measuring accuracy. Therefore, this paper starts from analyzing th...

Many image processing methods such as corner detection, optical flow and iterative enhancement make use of image tensors. Generally, these tensors are estimated using the structure tensor. In this work we show that the gradient energy tensor can be used as an alternative to the structure tensor in several cases. We apply the gradient energy tensor to common image problem applications such as co...

In this paper wormhole effects on SO(3) YM theory are examined. The wormhole wave functions for the scalar, the vector and the tensor expansion modes are computed assuming a small gauge coupling which leads to an effective decoupling of gravity and YM theory. These results are used to determine the wormhole vertices and the corresponding effective operators for the lowest expansion mode of each...

Using gauge theory/gravity duality we study sound wave propagation in strongly coupled non-conformal gauge theory plasma. We compute the speed of sound and the bulk viscosity of N = 2∗ supersymmetric SU(Nc) Yang-Mills plasma at a temperature much larger than the mass scale of the theory in the limit of large Nc and large ’t Hooft coupling. The speed of sound is computed both from the equation o...

Group analyses of DT-MRI data have so far focused on comparison of scalar variables derived from the tensor, such as the trace or anisotropy. An increasingly popular approach is to spatially normalise such scalar data sets and perform comparisons on a voxel-by-voxel basis. Here, we show how this approach can be extended to comparisons of the whole tensor and suggest statistical measures for cha...