Results 11 to 20 of about 4,500,655 (305)
Physics Letters BAstrophysical black holes come from exact solutions of the Einstein field equations. Therefore, any alternative–such as a gravastar–must meet the same standard of mathematical accuracy and internal consistency.
Farook Rahaman +4 more
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New Anisotropic Exact Solution in Multifield Cosmology
Universe, 2021 In the case of two-scalar field cosmology, and specifically for the Chiral model, we determine an exact solution for the field equations with an anisotropic background space.
Andronikos Paliathanasis
doaj +2 more sources
On the Exact Solution for the Schrödinger Equation
ParticlesFor almost 75 years, the general solution for the Schrödinger equation was assumed to be generated by an exponential or a time-ordered exponential known as the Dyson series.
Yair Mulian
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Analytical and Numerical Solution of Heat Transfer Equation in Rectangular Composite Fins [PDF]
Mechanics of Advanced Composite Structures, 2022 Today, the use of composites has received widespread attention due to their special properties that cannot be found in alloys. Kevlar-Epoxy composite is one of the most widely used materials. In this paper, we analyze the heat transfer in rectangular fin
Mohsen Hajinejad Sorkhi +1 more
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Exact solitary and periodic-wave solutions of the K(2,2) equation (defocusing branch) [PDF]
, 2010 An auxiliary elliptic equation method is presented for constructing exact solitary and periodic travelling-wave solutions of the K(2, 2) equation (defocusing branch). Some known results in the literature are recovered more efficiently, and some new exact
Deng, Xijun, Cao, Jinlong, Parkes, E.J.
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Exact and Approximate Solutions for Some Classes of the Inhomogeneous Pantograph Equation
Axioms, 2023 The standard pantograph delay equation (SPDDE) is one of the famous delay models. This standard model is basically homogeneous in nature and it has been extensively studied in the literature. However, the studies on the general inhomogeneous form of such
A. A. Al Qarni
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EXACT INFLATIONARY SOLUTIONS [PDF]
International Journal of Modern Physics D, 1998 We present a new class of exact inflationary solutions for the evolution of a universe with spatial curvature, filled with a perfect fluid, a scalar field with potential V±(ϕ) = λ(ϕ2 ± δ2)2 and a cosmological constant Λ. With the V+(ϕ) potential and a negative cosmological constant, the scale factor experiments a graceful exit.
Piccinelli, Gabriella +2 more
openaire +3 more sources
Exact solutions in Chiral cosmology [PDF]
General Relativity and Gravitation, 2019 10 pages, no figures, title changed, version accepted for publication by Gen.
Andronikos Paliathanasis +2 more
openaire +3 more sources
Exact Solution of Schrödinger Equation for Pentaquark Systems [PDF]
Mathematics Interdisciplinary Research, 2023 In this paper, we present an exact analytical solution for five interacting quarks. We solve the Schr\"{o}dinger equation for pentaquarks in the framework of five-body and two-body problems.
Narges Tazimi +2 more
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seantrim/exact-thermochem-solution: Initial Release
, 2022 Full Changelog: https://github.com/seantrim/exact-thermochem-solution/commits/v1.0.
seantrim
core +1 more source