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seen Mar 21 at 19:32

Jan
12
comment Topological entanglement entropy only defined for a system in the ground state?
Here is a free version of the paper linked above (arxiv.org/abs/0704.3616)
Nov
23
revised Trace of the number operator in second quantization
corrected mathematical mistakes
Nov
23
revised Trace of the number operator in second quantization
added 129 characters in body
Nov
23
comment Trace of the number operator in second quantization
and I made a mistake in using the identity $det(e^A)=e^{Tr(A)}$. I'll have to change the phrasing of my question, since I'm still curious about the trace of the number operator.
Nov
23
comment Trace of the number operator in second quantization
You're right, there is no T in the Hamiltonian, that was a mistake.
Nov
22
asked Trace of the number operator in second quantization
Jul
21
awarded  Revival
May
10
awarded  Supporter
Mar
26
comment Why should multiple versions of a weak measurement preclude it from being a measurement of intrinsic properties of some system
So suppose we conclude that what is measured in weak measurement is some combined property of the system of interest and the meter system. Is Parrott's criticism ultimately that one could never consistently devise a protocol for extracting only the information about the system of interest, whether that protocol be setting $\rho$ to 0, or knowing $\rho$ and doing some mathematical manipulation of the data? If that is the case, I am still not certain about what reasoning leads one to that conclusion. If it is not the case, then isn't weak measurement a valid measurement?
Mar
26
awarded  Student
Mar
26
asked Why should multiple versions of a weak measurement preclude it from being a measurement of intrinsic properties of some system
Mar
24
awarded  Editor
Mar
24
revised Cardinality of the Universes Set
added 124 characters in body
Mar
24
answered Cardinality of the Universes Set
Mar
10
awarded  Quorum
Feb
22
answered Why must the eigenvalue of the number operator be an integer?
Feb
20
awarded  Teacher
Feb
20
answered Can two distinct spatially separated many-body systems in the ground state contain entangled particles?
Jan
28
answered Does the Pauli exclusion principle instantaneously affect distant electrons?