9895980
BRANE WORLD IN A TOPOLOGICAL BLACK HOLES IN ASYMPTOTICALLY FLAT SPACE–TIME
We study static brane configurations in the bulk background of the topological black holes in asymptotically flat space–time and find that such configurations are possible even for flat black hole horizon, unlike the AdS black hole case. We construct the brane world model with an orbifold structure S1/Z2 in such bulk background and study massless bulk scalar field.
16035453
Probing the partially localized supergravity background of the fundamental string ending on the Dp-b
We study the dynamics of the probe fundamental string in the field background of the partially localized supergravity solution for the fundamental string ending on the $\mathrm{D}p$-brane. We separately analyze the probe dynamics for its motion along the world volume direction and the transverse direction of the source $\mathrm{D}p$-brane. We compare the dynamics of the probe along the $\mathrm{D}p$-brane world volume direction to the bion dynamics.
17606655
BPS saturated dyonic black holes of N = 8 supergravity vacua
We summarize the results for four-dimensional Bogomol'nyi-Prasad-Sommerfield (BPS) saturated dyonic black hole solutions arising in the Kaluza-Klein sector and the three-form field sector of the eleven-dimensional super-gravity on a seven-torus. These black hole solutions break ¾ of N = 8 supersymmetry, fill out the multipletes of U -duality group, and the two classes of solutions are related to each other by a discrete symmetry transformation in E 7 . Using the field redefinitions of the corresponding effective actions, we present these solutions in terms of fields describing classes of dyonic black holes carrying charges of U (1) gauge fields in Neveu-Schwarz-NeveuSchwarz and/or Ramond-Ramond sector(s) of the type-IIA superstring on a six-torus. We also summarize the dependence of their ADM masses on the asymptotic values of scalar fields, parameterizing the toroidal moduli space and the string coupling constant.
14257701
The Cardy-Verlinde Formula and Asymptotically de Sitter Brane Universe
We consider the brane universe in the bulk background of the topological AdS-Schwarzschild black holes, where the brane tension takes larger value than the fine-tunned value. The resulting universe is radiation dominated and has positive cosmological constant. We obtain the associated cosmological Cardy formula and the Cardy-Verlinde formula. We also derive the Hubble and the Bekenstein entropy bounds from the conjectured holography bound on the Casimir entropy.
10309383
Localization of gravity on dilatonic domain walls: addendum to “Solitons in brane worlds”
Abstract We supplement the discussion on localization of gravity on dilatonic domain walls in “Solitons in brane worlds” (Nucl. Phys. B 576 (2000) 106, hep-th/9911218) by giving unified and coherent discussion which combines the result of this paper and the expanded results in the author's subsequent papers in an attempt to avoid misleading readers. We also discuss the possible string theory embeddings of the Randall–Sundrum type brane world scenarios through non-dilatonic and dilatonic domain walls, which straightforwardly follows from the author's previous works but was not elaborated explicitly.
17933501
Generalized conformal quantum mechanics of D0-branes
We study the generalized conformal quantum mechanics of the probe D0-brane in the near horizon background of the bound state of source D0-branes. We elaborate on the relationship of such model to the M theory in the light cone frame.
120136783
Relation between the critical current and the n value of ReBCO thin films: A scaling law for flux pinning of ReBCO thin films
Detailed field and angle dependencies of the critical current and the n value for a SmBCO coated conductor have been measured. It was found that the field dependence of the n value can be fitted by an empirical power law with three parameters including the irreversibility field. We also found that there is a correlation between the critical current and the n value which can be described by the Kramer model including thermal activation. The model fits the field dependence of the empirical critical current data at various angles and temperatures with three fitting parameters, the pinning force maximum, the g factor, and the upper critical field. The upper critical field found from fitting was higher than the irreversibility field, and the angular dependence of the upper critical field is in agreement with the Tinkham model. The pinning force maxima do not show a correlation with the upper critical or the irreversibility fields, which is attributed to the difference in the pinning mechanism with a variation ...