Pii: S0167-2789(98)00054-2
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چکیده
We discuss the problem of counting the maximum number of distinct states that an isolated physical system can pass through in a given period of time its maximum speed of dynamical evolution. Previous analyses have given bounds in terms of AE, the standard deviation of the energy of the system; here we give a strict bound that depends only on E E0, the system's average energy minus its ground state energy. We also discuss bounds on information processing rates implied by our bound on the speed of dynamical evolution. For example, adding 1 J of energy to a given computer can never increase its processing rate by more than about 3 x 1033 operations per second. © 1998 Published by Elsevier Science B.V. All rights reserved.
منابع مشابه
Pii: S0167-2789(98)00051-7
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تاریخ انتشار 2003