Quantum mechanical evolution towards thermal equilibrium
نویسندگان
چکیده
منابع مشابه
Quantum mechanical evolution towards thermal equilibrium.
The circumstances under which a system reaches thermal equilibrium, and how to derive this from basic dynamical laws, has been a major question from the very beginning of thermodynamics and statistical mechanics. Despite considerable progress, it remains an open problem. Motivated by this issue, we address the more general question of equilibration. We prove, with virtually full generality, tha...
متن کاملQuantum degenerate exciton-polaritons in thermal equilibrium.
We study the momentum distribution and relaxation dynamics of semiconductor microcavity polaritons by angle-resolved and time-resolved spectroscopy. Above a critical pump level, the thermalization time of polaritons at positive detunings becomes shorter than their lifetime, and the polaritons form a quantum degenerate Bose-Einstein distribution in thermal equilibrium with the lattice.
متن کاملEmergence of Order in Quantum-Mechanical Evolution
We study evolution equations which model selection and mutation within the framework of quantum mechanics. The main question is to what extent order is achieved for an ensemble of typical systems. As an indicator for mixing or purification, a quadratic entropy is used, which assumes values between zero, for pure states, and (d− 1)/d, for fully mixed states. Here, d is the dimension. Whereas the...
متن کاملQuantum mechanical formalism for biological evolution
We study the evolution of sexual and asexual populations in general fitness landscapes. We find deep relations between the mathematics of biological evolution and the formalism of quantum mechanics. We give the general structure of the evolution of populations which is in general an off-equilibrium process that can be expressed by path integrals over phylogenies. These phylogenies are sums of l...
متن کاملEvolution of cancer: A quantum mechanical approach
Cancer, the ‘Emperor of All Malady’ has already occupied its position in the list of most fascinating but elusive enigmas in human history like life and consciousness. Existence of phenocopy, C-value paradox and many other electrifying findings has questioned the linear central dogma of molecular biology. This points a paradigm shift towards a stochastic realization of biology. And here, quantu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review E
سال: 2009
ISSN: 1539-3755,1550-2376
DOI: 10.1103/physreve.79.061103