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pro vyhledávání: '"781"'
Autor:
I. Sechin, A. V. Zotov
Publikováno v:
Physics Letters B, Vol 781, Iss, Pp 1-7 (2018)
Physics Letters
Physics Letters
In this paper we discuss $R$-matrix-valued Lax pairs for ${\rm sl}_N$ Calogero-Moser model and their relation to integrable quantum long-range spin chains of the Haldane-Shastry-Inozemtsev type. First, we construct the $R$-matrix-valued Lax pairs for
Publikováno v:
Physics Letters
Physics Letters B, Vol 781, Iss, Pp 195-200 (2018)
Physics Letters B, Vol 781, Iss, Pp 195-200 (2018)
Employing the modified entropy–area relation suggested by Tsallis and Cirto [1], and the holographic hypothesis, a new holographic dark energy (HDE) model is proposed. Considering a flat Friedmann–Robertson–Walker (FRW) universe in which there
Autor:
S. Hoseinzadeh, A. Rezaei-Aghdam
Publikováno v:
Physics Letters B, Vol 781, Iss, Pp 383-389 (2018)
Physics Letters
Physics Letters
We propose a new group-theoretical (Chern-Simons) formulation for the bi-metric theory of gravity in (2+1)-dimensional spacetime which describe two interacting massless spin-2 fields. Our model has been formulated in terms of two dreibeins rather tha
Autor:
Hayato Motohashi, Masato Minamitsuji
Publikováno v:
Physics Letters B, Vol 781, Iss, Pp 728-734 (2018)
Physics Letters
Physics Letters
Recent gravitational wave observations of binary black hole mergers and a binary neutron star merger by LIGO and Virgo Collaborations associated with its optical counterpart constrain deviation from General Relativity (GR) both on strong-field regime
Autor:
Ten-Yeh Yu, Wen-Yu Wen
Publikováno v:
Physics Letters B, Vol 781, Iss, Pp 713-718 (2018)
Physics Letters
Physics Letters
We explore the cosmic censorship in the Einstein-Maxwell-dilaton theory following Wald's thought experiment to destroy a black hole by throwing in a test particle. We discover that at probe limit the extremal charged dilaton black hole could be destr
Autor:
Speight, JM
Publikováno v:
Physics Letters
Physics Letters B, Vol 781, Iss, Pp 455-458 (2018)
Physics Letters B, Vol 781, Iss, Pp 455-458 (2018)
It is shown that the addition of a single chiral symmetry breaking term to the standard omega meson variant of the nuclear Skyrme model can reproduce the proton-neutron mass difference.
Comment: 8 pages, 2 figures
Comment: 8 pages, 2 figures
Autor:
R.R. Metsaev
Publikováno v:
Physics Letters
Physics Letters B, Vol 781, Iss, Pp 568-573 (2018)
Physics Letters B, Vol 781, Iss, Pp 568-573 (2018)
Using BRST-BV approach, massless and massive continuous-spin fields propagating in the flat space are studied. For such fields, BRST-BV gauge invariant Lagrangian is obtained. The Lagrangian and gauge transformations are constructed out of traceless
Publikováno v:
Physics Letters B, Vol 781, Iss, Pp 99-106 (2018)
Università degli Studi di Napoli Federico II
Physics Letters
Università degli Studi di Napoli Federico II
Physics Letters
Energy conditions can play an important role in defining the cosmological evolution. Specifically acceleration/deceleration of cosmic fluid, as well as the emergence of Big Rip singularities, can be related to the constraints imposed by the energy co
Publikováno v:
Physics Letters B, Vol 781, Iss, Pp 621-625 (2018)
Physics Letters
Physics Letters
We show that a {\it massless} scalar field in a gravitational wave background can develop a non-zero vacuum expectation value. We draw comparisons to the generation of a non-zero vacuum expectation value for a scalar field in the Higgs mechanism and
Autor:
Gabriel Herczeg, Andrew Waldron
Publikováno v:
Physics Letters B, Vol 781, Iss, Pp 312-315 (2018)
Physics Letters
Physics Letters
We present a generally covariant approach to quantum mechanics in which generalized positions, momenta and time variables are treated as coordinates on a fundamental "phase-spacetime." We show that this covariant starting point makes quantization int