2,776 research outputs found
Steady States of Infinite-Size Dissipative Quantum Chains via Imaginary Time Evolution
Directly in the thermodynamic limit, we show how to combine imaginary and
real time evolution of tensor networks to efficiently and accurately find the
nonequilibrium steady states (NESS) of one-dimensional dissipative quantum
lattices governed by the Lindblad master equation. The imaginary time evolution
first bypasses any highly correlated portions of the real-time evolution
trajectory by directly converging to the weakly correlated subspace of the
NESS, after which real time evolution completes the convergence to the NESS
with high accuracy. We demonstrate the power of the method with the dissipative
transverse field quantum Ising chain. We show that a crossover of an order
parameter shown to be smooth in previous finite-size studies remains smooth in
the thermodynamic limit.Comment: 5+3 pages, 5 figures, 2 table
Symmetry between repulsive and attractive interactions in driven-dissipative Bose-Hubbard systems
The driven-dissipative Bose-Hubbard model can be experimentally realized with
either negative or positive onsite detunings, inter-site hopping energies, and
onsite interaction energies. Here we use one-dimensional matrix product density
operators to perform a fully quantum investigation of the dependence of the
non-equilibrium steady states of this model on the signs of these parameters.
Due to a symmetry in the Lindblad master equation, we find that simultaneously
changing the sign of the interaction energies, hopping energies, and chemical
potentials leaves the local boson number distribution and inter-site number
correlations invariant, and the steady-state complex conjugated. This shows
that all driven-dissipative phenomena of interacting bosons described by the
Lindblad master equation, such as "fermionization" and "superbunching", can
equivalently occur with attractive or repulsive interactions.Comment: single column 12 pages, 4 figures, 1 tabl
Collisional Energy Loss of Non Asymptotic Jets in a QGP
We calculate the collisional energy loss suffered by a heavy (charm) quark
created at a finite time within a Quark Gluon Plasma (QGP) in the classical
linear response formalism as in Peigne {\it et al.} \cite{peigne}. We pay close
attention to the problem of formulating a suitable current and the isolation of
binding and radiative energy loss effects. We find that unrealistic large
binding effects arising in previous formulations must be subtracted. The finite
time correction is shown to be important only for very short length scales on
the order of a Debye length. The overall energy loss is similar in magnitude to
the energy loss suffered by a charge created in the asymptotic past. This
result has significant implications for the relative contribution to energy
loss from collisional and radiative sources and has important ramifications for
the ``single electron puzzle'' at RHIC.Comment: 15 Pages, 11 figures, revte
Rekonstruksi Perlindungan Hak-hak Korban Tindak Pidana
Victims as the suffred person because of crime, should receive the protection of their rights. Indonesian positive law (Penal Code and Criminal Procedure Code) was originally regulated only compensation to victims. Then, victims\u27 rights later evolved to become more widespread in Law No. 13 of 2006 on the protection of witnesses and victims. However, the protection of victims\u27 rights is not integrated to the criminal justice system. Therefore, the reconstruction of the protection of rights of victims was taken so that all victims can obtain the widest possible access to their rights. Keywords: Victims\u27 Rights and Laws Protection Korban sebagai pihak yang menderita akibat suatu tindak pidana, perlu mendapat perlindungan hukum terhadap hak-haknya. Hukum positif Indonesia (KUHP dan KUHAP) pada awalnya hanya memberikan hak ganti rugi terhadap korban. Hak-hak korban kemudian berkembang menjadi lebih luas dalam undang-undang nomor 13 tahun 2006 tentang perlindungan saksi dan korban. Namun, perlindungan hak-hak korban dalam undang-undang tersebut tidak terintegrasi dalam jaringan sistem peradilan pidana. Rekonstruksi perlindungan hak-hak korban dilakukan supaya semua korban dapat memperoleh akses seluas-luasnya atas hak-hakny
Pengaruh Pengetahuan Tentang Lingkungan, Sikap pada Lingkungan, dan Norma Subjektif terhadap Niat Pembelian Green Product
Purpose of this research to analyze the effect of knowledge about environment, attitude to the environment and subjective norms on purchase intention on green product. This study is a survey. The population is a consumer aged 17 years and over who know and understand about the green product in Surakarta. Sample of 100 people with convenience sampling data. Type data used quantitative and qualitative data. Source of data used primary data and secondary data. The technique of collecting data used questionnaires and literature. Data were analyzed used multiple linear regression. The results showed that the knowledge of the environment a significant effect on purchase intention green product. Attitude to the environment a significant effect on purchase intention green product. Subjective norms a significant effect on purchase intention green product. Attitude to the environment is the dominant variable effect on purchase intention green product
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