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86 papers · 1 filter
String Junctions and the BPS Spectrum of N=2 SU(2) Theory with Massive Matters
Yukiko Ohtake
We study the BPS spectrum of four dimensional N=2 SU(2) theory with massive fundamental matters using the D3-brane probe. Since the BPS states are realized by string webs subject t…
On the Mass of Population III Stars
Fumitaka Nakamura, Masayuki Umemura
Performing 1D hydrodynamical calculations coupled with non-equilibrium processes for H2 formation, we pursue the thermal and dynamical evolution of filamentary primordial clouds an…
Thermodynamics of doped Kondo insulator in one dimension: Finite Temperature DMRG Study
N. Shibata, H. Tsunetsugu
The finite-temperature density-matrix renormalization-group method is applied to the one-dimensional Kondo lattice model near half filling to study its thermodynamics. The spin and…
Thermodynamics of the t-J Ladder: A Stable Finite Temperature Density Matrix Renormalization Group Calculation
Beat Ammon, Matthias Troyer, T. M. Rice +1
Accurate numerical simulations of a doped t-J model on a two-leg ladder are presented for the particle number, chemical potential, magnetic susceptibility and entropy in the limit…
Fast algorithm for calculating two-photon absorption spectra
Yoshiyuki Kurokawa, Shintaro Nomura, Tadashi Takemori +1
We report a numerical calculation of the two-photon absorption coefficient of electrons in a binding potential using the real-time real-space higher-order difference method. By int…
Thermal and Dynamical Evolution of Primordial Gas Clouds - On the Formation of First Luminous Objects -
Ryoichi Nishi, Hajime Susa, Hideya Uehara +2
We investigate the thermal and dynamical evolution of primordial gas clouds in the universe after decoupling. Comparing the time-scale of dynamical evolution with that of fragmenta…