Batalin-Tyutin Quantization of the Chiral Schwinger Model
We quantize the chiral Schwinger Model by using the Batalin-Tyutin formalism. We show that one can systematically construct the first
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Correlations at a quantum phase transition in interacting Bose systems
We have investigated the correlation functions of interacting bosons at the generic superfluid-insulator transition, a prototypical quantum phase transition, in
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dS/CFT correspondence from the Brick Wall method
We research the entropy of a black hole in curved space-times by 't Hooft`s approach, so-called the brick wall method.
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Phase-field study for the splitting mechanism of coherent misfitting precipitates in anisotropic elastic media
Coherent misfitting precipitates in elastically stressed media such as $γ\prime$ particles in nickel-based super-alloys show various splitting patterns such as
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Possibility of direct Mott insulator-to-superfluid transitions in weakly disordered boson systems
We study the zero-temperature phase transitions of a two-dimensional disordered boson Hubbard model at incommensurate boson densities. Via matrix diagonalization
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VLT spectra of the companion candidate Cha Ha 5/cc 1
We obtained optical and infrared spectra of Cha Ha 5/cc 1, a faint possibly sub-stellar companion candidate next to the
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Molecular line study of evolution in protostellar cloud cores
Two dense dark cloud cores representing different stages of dynamical evolution were observed in a number of molecular spectral lines.
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Close Companions to Nearby Young Stars from Adaptive Optics Imaging on VLT and Keck
We report the results of VLT and Keck adaptive optics surveys of known members of the Eta Chamaeleontis, MBM 12,
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Timescales of disk evolution and planet formation
We present high-spatial resolution HST and adaptive optics observations, and high-sensitivity ISO (ISOCAM & ISOPHOT) observations of a sample of
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Evolution of Dusty Disks in Nearby Young Stellar Groups
Given their proximity and age differences, nearby groups of young stars are valuable laboratories for investigations of disk evolution and
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HST spectral mapping of V2051 Ophiuchi in a low state
V2051 Oph is an eclipsing dwarf novae with an orbital period of 90 min. This system belongs to a small
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Importance of Coupling between the Charge and Spin Degrees of Freedom in High Tc Superconductivity
Based on an improved SU(2) slave-boson approach showing coupling between the cha rge and spin degrees of freedom, we derive
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Kinematics of T Tauri stars in Chamaeleon
We study the kinematics of T Tauri stars (TTS) located in the cores of the Chamaeleon clouds as well as
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Magnetic CVs in the UCT CCD CV Survey
An overview is given of all the magnetic CVs found in the UCT CCD CV Survey (Woudt & Warner 2001,
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Melting of crystalline films with quenched random disorder
According to the Kosterlitz-Thouless-Theory two-dimensional solid films melt by the unbinding of dislocation pairs. A model including quenched random impurities
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The Eta Chamaeleontis Cluster: Recent Results
The eta Chamaeleontis star cluster is one of the most important nearby groupings of pre-main sequence (PMS) stars. With accurately
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