Time measurement in quantum gravity
نویسندگان
چکیده
منابع مشابه
Quantum Measurement and Quantum Gravity
At present, there are two possible, and equally plausible, explanations for the physics of quantum measurement. The first explanation, known as the many-worlds interpretation, does not require any modification of quantum mechanics, and asserts that at the time of measurement the Universe splits into many branches, one branch for every possible alternative. The various branches do not interfere ...
متن کاملFrom time-irreversibility in gravity to measurement in quantum mechanics
1. We prove a theorem that says, essentially, that it is impossible for an infinite slab to exist which absorbs, reflects, or transforms a fraction> 0 of the energy in weak gravitational waves. But it is (essentially) possible to make a 100% efficient emit-
متن کاملTime in Quantum Measurement
Based on a model of quantum measurement we derive an estimate for the external measurement-time. Some interesting consequences will be analyzed. Keywords: Quantum Entropy, Energy, Measurement, Time MSC 2000 codes: 94A17, 81P15 Entropy 2006, 8, 182-187 183 1 Introduction Given an apparatus or memory A, a system S and the environment E , the measurement process M can be represented by the followi...
متن کاملTime, Gravity, and Quantum Mechanics
The role that time plays in Einstein's theory of gravity and in quantum mechanics is described, and the difficulties that these conflicting roles present for a quantum theory of gravity are described. The relation of any fundamental theory to time is crucial as was evident from the earliest days of physics. If we go back to Newton's Principia, in which he established a general theoretical struc...
متن کاملDoes Time Exist in Quantum Gravity?
Time is absolute in standard quantum theory and dynamical in general relativity. The combination of both theories into a theory of quantum gravity leads therefore to a “problem of time”. In my essay I shall investigate those consequences for the concept of time that may be drawn without a detailed knowledge of quantum gravity. The only assumptions are the experimentally supported universality o...
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: Physics Letters B
سال: 1994
ISSN: 0370-2693
DOI: 10.1016/0370-2693(94)91479-6