The Role of Heat Bath and Pointer Modes in Quantum Measurement

Details The Role of Heat Bath and Pointer Modes in Quantum Measurement The Role of Heat Bath and Pointer Modes in Quantum Measurement

1999-03-27

arxiv.org/abs/cond-mat/9903403v2

Modern Physics Letters B 14 (2000) 303-312 (an improved version, also posted as cond-mat/0003019)

Physics

Condensed Matter

Statistical Mechanics

14 pages in plain TeX

Scientific paper

10.1142/S0217984900000409

We present an exact derivation of a process in which a microscopic measured system interacts with "heat bath" and pointer modes of a measuring device, via a linear coupling involving Hermitian operator $\Lambda$ of the system. In the limit of strong interaction with these modes, over a small time interval, we show that the measured system and the "pointer" part of the measuring device evolve into a statistical mixture of direct-product states such that the system is in each eigenstate of $\Lambda$ with the correct quantum-mechanical probability, whereas the expectation values of pointer-space operators retain amplified information of the system's eigenstate.

Affiliated with

Also associated with

No associations

Rating

The Role of Heat Bath and Pointer Modes in Quantum Measurement does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Role of Heat Bath and Pointer Modes in Quantum Measurement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Role of Heat Bath and Pointer Modes in Quantum Measurement will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-270025