Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Shigefumi Naka"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 7, Pp 1-16 (2022)
Abstract The bi-local fields are the quantum fields of two-particle systems, the bi-local systems, bounded by relativistic potentials. Since those form constrained dynamical systems, it is limited to introduce the interactions of the bi-local fields
Externí odkaz:
https://doaj.org/article/609d615726d54d30aa50c0a3e7ae8864
Autor:
Haruki Toyoda, Shigefumi Naka
Publikováno v:
Symmetry, Integrability and Geometry: Methods and Applications, Vol 2, p 031 (2006)
We study a way of q-deformation of the bi-local system, the two particle system bounded by a relativistic harmonic oscillator type of potential, from both points of view of mass spectra and the behavior of scattering amplitudes. In our formulation, t
Externí odkaz:
https://doaj.org/article/f7258119c99b45189e1ef36ead931bfc
Publikováno v:
Physical Review
The ladder operators in harmonic oscillator are a well-known strong tool for various problems in physics. In the same sense, it is sometimes expected to handle the problems of repulsive harmonic oscillator in a similar way to the ladder operators in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b88a580c67be7f4496af032dd4f54fe0
Publikováno v:
Progress of Theoretical Physics. 124:1019-1035
Dynamical systems associated with a q-deformed two dimensional phase space are studied as effective dynamical systems described by ordinary variables. In quantum theory, the momentum operator in such a deformed phase space becomes a difference operat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::23a7833c0d81e776fd0daa476e3834b9
https://doi.org/10.1143/ptp.124.1019
https://doi.org/10.1143/ptp.124.1019
Publikováno v:
Proceedings of CST-MISC Joint Symposium on Particle Physics — from Spacetime Dynamics to Phenomenology —.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae4b89a89a6ca638801b598d37b37a3f
https://doi.org/10.7566/jpscp.7.010001
https://doi.org/10.7566/jpscp.7.010001
Publikováno v:
Czechoslovak Journal of Physics. 56:1305-1310
We study a way ofq-deformation of the bi-local system, the two-particle system bounded by a relativistic harmonic-oscillator type of potential, from both points of view of mass spectra and the behavior of scattering amplitudes. In our formulation, th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f14ae8a292170b248d695ae53e68ddb2
https://doi.org/10.1007/s10582-006-0442-6
https://doi.org/10.1007/s10582-006-0442-6
Publikováno v:
Progress of Theoretical and Experimental Physics
In $\kappa $ -Minkowski spacetime, the coordinates are Lie algebraic elements such that time and space coordinates do not commute, whereas space coordinates commute with each other. The noncommutativity is proportional to a Planck-length-scale consta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0525e958654ec3008ff6d2c58c79e8cf
http://www.openaccessrepository.it/record/5427
http://www.openaccessrepository.it/record/5427
Autor:
Shigefumi Naka, Naohiro Kanda
Publikováno v:
Progress of Theoretical and Experimental Physics
The particles with almost light velocity are able to be sources of the shock-wave gravity (SWG). Then, for ultra-high-energy particles, there exist two-body scatterings such that one particle is scattered from the gravitational background produced by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90fb4052f3edef377ab4567c5058c69f
Autor:
Shigefumi Naka, Yoshitaka Sato
Publikováno v:
Progress of Theoretical Physics. 103:847-857
The bi-local (BL) field equations offer a useful phenomenological approach to two-body bound state problems by means of relativistic potentials, although their field theoretical basis is obscure. On the other hand, the Bethe-Salpeter (BS) equation fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f29f82ef0b99f405eeae50c3e15876e3
https://doi.org/10.1143/ptp.103.847
https://doi.org/10.1143/ptp.103.847
Publikováno v:
Progress of Theoretical Physics. 103:411-423
The bi-local model of hadrons is studied from the viewpoint of non-commutative geometry formulated so that Higgs-like scalar fields play the role of a bridge, the bi-local fields, connecting different spacetime points. We show that the resultant acti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b79865b2e0879a0e13fc407faaabe89
https://doi.org/10.1143/ptp.103.411
https://doi.org/10.1143/ptp.103.411