Zobrazeno 1 - 10
of 267
pro vyhledávání: '"Sofianos, S. A."'
Autor:
Lekala, M. L., Chakrabarti, B., Das, T. K., Rampho, G. J., Sofianos, S. A., Adam, R. M., Haldar, S. K.
Publikováno v:
J Low Temp Phys 2017, 187:232--250
We study the ground state and the low-lying excitations of a trapped Bose gas in an isotropic harmonic potential for very small ($\sim 3$) to very large ($\sim 10^7$) particle numbers. We use the correlated two-body basis functions and the shape-depe
Externí odkaz:
http://arxiv.org/abs/1409.6647
Publikováno v:
J. Phys. A: Math. Theor. 40 (2007) 14857-14869
It is shown that the spectral points (bound states and resonances) generated by a central potential of a single-channel problem, can be found using rational parametrization of the S-matrix. To achieve this, one only needs values of the S-matrix along
Externí odkaz:
http://arxiv.org/abs/1110.4988
Publikováno v:
Mod. Phys. Lett. B22 (2008) 2181
Consider the fixed-$\ell$ inverse scattering problem. We show that the zeros of the regular solution of the Schr\"odinger equation, $r_{n}(E)$, which are monotonic functions of the energy, determine a unique potential when the domain of the energy is
Externí odkaz:
http://arxiv.org/abs/0809.2903
Publikováno v:
ZhETF 135, 419 (2009)
The universal three-body dynamics in ultra-cold binary gases confined to one-dimensional motion are studied. The three-body binding energies and the (2 + 1)-scattering lengths are calculated for two identical particles of mass $m$ and a different one
Externí odkaz:
http://arxiv.org/abs/0808.2704
Publikováno v:
InverseProb.24:055014,2008
The long-standing problem of constructing a potential from mixed scattering data is discussed. We first consider the fixed-$\ell$ inverse scattering problem. We show that the zeros of the regular solution of the Schr\"odinger equation, $r_{n}(E)$ whi
Externí odkaz:
http://arxiv.org/abs/0710.3524
We investigate the properties of 3He, 4He, 6He, 7Li and 16O nuclei in nuclear matter of finite temperature and density. A Dyson expansion of the many-body Green function leads to few-body equations that are solved using the ntegro-Differential Equati
Externí odkaz:
http://arxiv.org/abs/nucl-th/0503050
Autor:
Lekala, M. L., Sofianos, S. A.
We performed bound state calculations to obtain the first few vibrational states for the Ar_3 molecular system. The equations used are of Faddeev-type and are solved directly as three-dimensional equations in configuration space, i.e. without resorti
Externí odkaz:
http://arxiv.org/abs/physics/0410025
Publikováno v:
Annals Phys. 316 (2005) 107-159
We present a method based on hyperspherical harmonics to solve the nuclear many-body problem. It is an extension of accurate methods used for studying few-body systems to many bodies and is based on the assumption that nucleons in nuclei interact mai
Externí odkaz:
http://arxiv.org/abs/nucl-th/0410016
Autor:
Beyer, M., Mattiello, S., Strauss, S., Frederico, T., Weber, H. J., Schuck, P., Sofianos, S. A.
Strongly interacting matter such as nuclear or quark matter leads to few-body bound states and correlations of the constituents. As a consequence quantum chromodynamics has a rich phase structure with spontaneous symmetry breaking, superconductivity,
Externí odkaz:
http://arxiv.org/abs/nucl-th/0410008
Autor:
Sofianos, S. A., Beyer, M.
We are concerned with few-particle correlations in a fermionic system at finite temperature and density. Within the many-body Green functions formalism the description of correlations is provided by the Dyson equation approach that leads to effective
Externí odkaz:
http://arxiv.org/abs/nucl-th/0408073