Zobrazeno 1 - 10
of 415
pro vyhledávání: '"Brau, F."'
We propose a new treatment for the quantum three-body problem. It is based on an expansion of the wave function on harmonic oscillator functions with different sizes in the Jacobi coordinates. The matrix elements of the Hamiltonian can be calculated
Externí odkaz:
http://arxiv.org/abs/2003.11028
Stimulated amplification of fluorescence signals is obtained under conditions which approach biocompatibility by adding NanoParticles (NPs) to an aqueous solution of fluorescein. The conditions for the stability of the suspension and optimum dye conc
Externí odkaz:
http://arxiv.org/abs/1908.10199
Autor:
Gutiérrez, G., Colonnello, C., Boltenhagen, P., Darias, J. R., Peralta-Fabi, R., Brau, F., Clément, E.
We investigate, at a laboratory scale, the collapse of cylindrical shells of radius $R$ and thickness $t$ induced by a granular discharge. We measure the critical filling height for which the structure fails upon discharge. We observe that the silos
Externí odkaz:
http://arxiv.org/abs/1207.0861
Autor:
Brau, F., Buisseret, F.
Publikováno v:
Phys. Rev. C 76, 065212 (2007)
We investigate the possibility for a quark-antiquark pair to form a bound state at temperatures higher than the critical one ($T>T_c$), thus after deconfinement. Our main goal is to find analytical criteria constraining the existence of such mesons.
Externí odkaz:
http://arxiv.org/abs/0706.4012
Autor:
Brau, F., Buisseret, F.
Publikováno v:
Phys.Rev.D74:036002,2006
The dynamics of a particle in a gravitational quantum well is studied in the context of nonrelativistic quantum mechanics with a particular deformation of a two-dimensional Heisenberg algebra. This deformation yields a new short-distance structure ch
Externí odkaz:
http://arxiv.org/abs/hep-th/0605183
Publikováno v:
Phys.Rev. D70 (2004) 014017
The masses of two-gluon glueballs are studied with a semirelativistic potential model whose interaction is a scalar linear confinement supplemented by a one-gluon exchange mechanism. The gluon is massless but the leading corrections of the dominant p
Externí odkaz:
http://arxiv.org/abs/hep-ph/0412173
Publikováno v:
J.Phys.G28:2771-2781,2002
The quark dynamics inside light mesons, except pseudoscalar ones, can be quite well described by a spinless Salpeter equation supplemented by a Cornell interaction (possibly partly vector, partly scalar). A mass formula for these mesons can then be o
Externí odkaz:
http://arxiv.org/abs/hep-ph/0412177
Publikováno v:
Phys.Rev.D62:117501,2000
The dominantly orbital state description is applied to the study of light mesons. The effective Hamiltonian is characterized by a relativistic kinematics supplemented by the usual funnel potential with a mixed scalar and vector confinement. The influ
Externí odkaz:
http://arxiv.org/abs/hep-ph/0412187
Publikováno v:
Phys.Rev. C64 (2001) 055202
Except the vibrational excitations of $K$ and $K^*$ mesons, the main features of spectra of mesons composed of quarks $u$, $d$, and $s$ can be quite well described by a semirelativistic potential model including instanton induced forces. The spectra
Externí odkaz:
http://arxiv.org/abs/hep-ph/0412185
Publikováno v:
Phys.Rev. C66 (2002) 055202
We study the spectra of mesons and baryons, composed of light quarks, in the framework of a semirelativistic potential model including instanton induced forces. We show how a simple modification of the instanton interaction in the baryon sector allow
Externí odkaz:
http://arxiv.org/abs/hep-ph/0412176