Results 71 to 80 of about 78,418 (279)

Lorentz gauge theory as a model of emergent gravity

, 2012
We consider a class of Lorentz gauge gravity theories within Riemann-Cartan geometry which admits a topological phase in the gravitational sector.
A. D. Sakharov, A. D. Sakharov, A. J. Hanson, C. Rovelli, D. G. Pak, D. M. Gitman, H. W. Hamber, I. L. Buchbinder, K. Hayashi, L. Smolin, M. Carmeli, S. Deser, Takuya Tsukioka, V. Ogievetsky, Ya. B. Zeldovich, Ya. B. Zeldovich, Youngman Kim, Yu. F. Pirogov   +17 more
core   +1 more source

The Asymptotic Dynamics of two-dimensional (anti-)de Sitter Gravity [PDF]

, 2002
We show that the asymptotic dynamics of two-dimensional de Sitter or anti-de Sitter Jackiw-Teitelboim (JT) gravity is described by a generalized two-particle Calogero-Sutherland model.
A. Achucarro, A. Strominger, A. Strominger, C. Teitelboim, D. Christensen, Daniela Zanon, Dietmar Klemm, E. Witten, G. 't Hooft, J. Gegenberg, J. Gegenberg, J. Maldacena, J.D. Brown, J.P.S. Lemos, J.P.S. Lemos, J.P.S. Lemos, M. Cadoni, M. Cadoni, Mauro Brigante, O. Coussaert, R. Jackiw, S. Cacciatori, S. Cacciatori, Sergio Cacciatori, V. de Alfaro   +24 more
core   +5 more sources

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

Advanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

Mass gap without confinement

Journal of High Energy Physics, 2017
We revisit a one-parameter family of three-dimensional gauge theories with known supergravity duals. We show that three infrared behaviors are possible.
Antón F. Faedo, David Mateos, David Pravos, Javier G. Subils   +3 more
doaj   +1 more source

Entanglement entropy in cubic gravitational theories

Journal of High Energy Physics, 2021
We derive the holographic entanglement entropy functional for a generic gravitational theory whose action contains terms up to cubic order in the Riemann tensor, and in any dimension.
Elena Cáceres, Rodrigo Castillo Vásquez, Alejandro Vilar López   +2 more
doaj   +1 more source

Workflow for Design of Experiments‐Based Modeling of Species Transport and Growth Kinetics in GaN Hydride Vapor Phase Epitaxy

Advanced Engineering Materials, EarlyView.
A novel workflow for investigating hydride vapor phase epitaxy for GaN bulk crystal growth is proposed. It combines Design of experiments (DoE) with physical simulations of mass transport and crystal growth kinetics, serving as an intermediate step between DoE and experiments.
J. Tomkovič, G. Lukin, H. Torkashvand, A. Kerschbaum, M. Müller, S. Besendörfer, J. Heitmann, J. Friedrich   +7 more
wiley   +1 more source

Detecting topology change via correlations and entanglement from gauge/gravity correspondence [PDF]

Journal of Mathematical Physics, 2018
We compute a momentum space version of the entanglement spectrum and entanglement entropy of general Young tableau states and one-point functions on Young tableau states. These physical quantities are used to measure the topology of the dual spacetime geometries in the context of gauge/gravity correspondence.
Hai Lin, Keyou Zeng
openaire   +3 more sources

De Sitter and Anti-de Sitter branes in self-tuning models

Journal of High Energy Physics, 2018
Maximally symmetric curved-brane solutions are studied in dilatonic braneworld models which realise the self-tuning of the effective four-dimensional cosmological constant.
J. K. Ghosh, E. Kiritsis, F. Nitti, L. T. Witkowski   +3 more
doaj   +1 more source

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

Advanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir, Jixing Lin, Yuncang Li, Li Zhu, Paul F. A. Wright, Cuie Wen   +5 more
wiley   +1 more source

Effective action in a higher-spin background [PDF]

, 2011
We consider a free massless scalar field coupled to an infinite tower of background higher-spin gauge fields via minimal coupling to the traceless conserved currents.
A Campoleoni, A Campoleoni, A Campoleoni, A Fotopoulos, A Fotopoulos, A Sagnotti, A Sagnotti, AA Tseytlin, AC Petkou, AD Sakharov, AM Polyakov, AY Segal, B Sundborg, B Wit de, C Fronsdal, C Fronsdal, D Anselmi, D Anselmi, D Francia, D Francia, D Francia, D Francia, D Francia, D Francia, D Francia, DJ Gross, E Sezgin, E Sezgin, EP Wigner, ES Fradkin, ES Fradkin, ES Fradkin, ES Fradkin, ES Fradkin, ES Fradkin, ES Fradkin, Euihun Joung, FA Berends, H Liu, H Weyl, IL Buchbinder, IR Klebanov, JE Moyal, Jihad Mourad, KB Alkalaev, M Henneaux, M Visser, MA Vasiliev, MA Vasiliev, MA Vasiliev, MA Vasiliev, MA Vasiliev, MA Vasiliev, MG Eastwood, ND Birrell, OA Gelfond, R Manvelyan, R Manvelyan, R Manvelyan, R Manvelyan, R Manvelyan, RdM Koch, RR Metsaev, S Giombi, S Weinberg, SE Konstein, X Bekaert, X Bekaert, X Bekaert, Xavier Bekaert   +69 more
core   +3 more sources