Results 31 to 40 of about 2,484,606 (341)
Exact solution of the Faddeev-Volkov model [PDF]
, 2007 The Faddeev-Volkov model is an Ising-type lattice model with positive Boltzmann weights where the spin variables take continuous values on the real line.
Bazhanov, Vladimir V. +2 more
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Exact Solution and Exotic Fluid in Cosmology
Entropy, 2012 We investigate cosmological consequences of nonlinear sigma model coupled with a cosmological fluid which satisfies the continuity equation. The target space action is of the de Sitter type and is composed of four scalar fields.
Phillial Oh, Taeyoon Moon, Seyen Kouwn
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Remarks on exact solutions [PDF]
General Relativity and Gravitation, 2006 This paper first discusses the historical context of the influential “Exact Solutions” book, which was co-authored by Malcolm MacCallum. It then makes various technical points about such solutions. It is useful to characterize solutions in terms of the properties of matter they contain or the kinds of test particle motions which are possible.
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Exact solution of the nuclear pairing problem [PDF]
, 2000 In many applications to finite Fermi-systems, the pairing problem has to be treated exactly. We suggest a numerical method of exact solution based on SU(2) quasispin algebras and demonstrate its simplicity and practicality.
Alexander Volya +43 more
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Exact solutions to quadratic gravity [PDF]
Physical Review D, 2017 Since all Einstein spacetimes are vacuum solutions to quadratic gravity in four dimensions, in this paper we study various aspects of non-Einstein vacuum solutions to this theory. Most such known solutions are of traceless Ricci and Petrov type N with a constant Ricci scalar.
Pravda, V. (Vojtěch) +3 more
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Rashba coupling in quantum dots: exact solution [PDF]
, 2003 We present an analytic solution to the problem of the Rashba spin-orbit coupling in semiconductor quantum dots. We calculate the exact energy spectrum, wave-functions, and spin--flip relaxation times.
A. O. Gogolin +14 more
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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
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Exact solution of the Φ23 finite matrix model
Nuclear Physics B, 2022 We find the exact solutions of the Φ23 finite matrix model (Grosse-Wulkenhaar model). In the Φ23 finite matrix model, multipoint correlation functions are expressed as G|a11…aN11|…|a1B…aNBB|.
Naoyuki Kanomata, Akifumi Sako
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Exact solutions in bouncing cosmology
Physics Letters B, 2007 We discuss the effects of a (possibly) negative $(1+z)^6$ type contribution to the Friedmann equation. No definite answer can be given as to the presence and magnitude of a particular mechanism, because any test using the general relation $H(z)$ is able to estimate only the total of all sources of such a term. That is why we describe four possibilities:
Stachowiak, Tomasz, Szydłowski, Marek
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Exact Solution of a Three-Dimensional Dimer System [PDF]
, 1996 We consider a three-dimensional lattice model consisting of layers of vertex models coupled with interlayer interactions. For a particular non-trivial interlayer interaction between charge-conserving vertex models and using a transfer matrix approach, we
A. B. Zamolodchikov +17 more
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