Results 1 to 10 of about 2,648,151 (44)
Heun Functions and Some of Their Applications in Physics
Advances in High Energy Physics, Volume 2018, Issue 1, 2018., 2018 Most of the theoretical physics known today is described by using a small number of differential equations. For linear systems, different forms of the hypergeometric or the confluent hypergeometric equations often suffice to describe the system studied.
M. Hortaçsu, Saber Zarrinkamar
wiley +1 more source
Optimized Reputable Sensing Participants Extraction for Participatory Sensor Networks
Mathematical Problems in Engineering, Volume 2014, Issue 1, 2014., 2014 By collecting data via sensors embedded personal smart devices, sensing participants play a key role in participatory sensor networks. Using information provided by reputable sensing participants ensures the reliability of participatory sensing data.
Weiwei Yuan +3 more
wiley +1 more source
A Lorentzian signature model for quantum general relativity [PDF]
, 1999 We give a relativistic spin network model for quantum gravity based on the Lorentz group and its q-deformation, the Quantum Lorentz Algebra. We propose a combinatorial model for the path integral given by an integral over suitable representations of ...
J. Barrett, L. Crane
semanticscholar +1 more source
From Physics Model to Results: An Optimizing Framework for Cross‐Architecture Code Generation
Scientific Programming, Volume 21, Issue 1-2, Page 1-16, 2013., 2013 Starting from a high‐level problem description in terms of partial differential equations using abstract tensor notation, the Chemora framework discretizes, optimizes, and generates complete high performance codes for a wide range of compute architectures. Chemora extends the capabilities of Cactus, facilitating the usage of large‐scale CPU/GPU systems
Marek Blazewicz +8 more
wiley +1 more source
Quantum cosmology of the Big Rip: Within GR and in a modified theory of gravity
, 2017 Quantum gravity is the theory that is expected to successfully describe systems that are under strong gravitational effects while at the same time being of an extreme quantum nature.
M. Bouhmadi-López +2 more
semanticscholar +1 more source
Measure problem in slow roll inflation and loop quantum cosmology [PDF]
, 2010 We consider the measure problem in standard slow-roll inflationary models from the perspective of loop quantum cosmology (LQC). Following recent results by Ashtekar and Sloan, we study the probability of having enough e-foldings and focus on its ...
Alejandro Corichi, A. Karami
semanticscholar +1 more source
, 1993 An elementary review of quantum cosmology. (Talk given at Texas/Pascos 1992 at Berkeley)
arxiv +1 more source
Quantum Effects on Cosmic Scales as an Alternative to Dark Matter and Dark Energy [PDF]
UniverseThe spin-torsion theory is a gauge theory approach to gravity that expands upon Einstein’s general relativity (GR) by incorporating the spin of microparticles. In this study, we further develop the spin-torsion theory to examine spherically symmetric and
Daxiu Chen, Lin Wang
semanticscholar +1 more source
On the Chern-Simons State in General Relativity and Modified Gravity Theories
, 2014 The Chern-Simons state is one solution to quantum constraints of gravity in the context of general relativity (GR) theory if we use Ashtekar's variables and if one orders the constraints with the triads to the left.
R. Rosas-Rodríguez
semanticscholar +1 more source
Past-directed scalar field gradients and scalar-tensor thermodynamics. [PDF]
Gen Relativ Gravit, 2023 Giusti A, Giardino S, Faraoni V.
europepmc +1 more source