RE: [Vo]:Article: Physicists Demonstrate How to Reverse of the Arrow of Time - MIT Technology Review

[bobcook39...@hotmail.com]

I wonder how the folks at MIT measured the “temperature” of the H atom in their 
trichloromethane molecule.

I have not heard about the semi-coherent state of a quantum system.  They seem 
to say its not quite entangled.  Maybe its just smoke and mirrors.  And what 
about the electrons in the molecule?  Are they part of the unentangled system?

All that questioning—it sounds more like the MIT experiment created a 
meta-stable situation with at least 2 nearly equivalent phases, which swap 
spins of the primary particles of the molecule, and/or orbital spin of the 
electrons, changing potential energy for kinetic energy from phase to phase, 
but with no net change in total energy of  the coherent (entangled) system.  
The “temperature” or kinetic energy flows between the various constituents of 
the molecule like an oscillating spring/mass system without loss of any energy.

Bob Cook


From: Jack Cole 
Sent: Saturday, December 23, 2017 6:38:53 AM
To: vortex-l@eskimo.com
Subject: [Vo]:Article: Physicists Demonstrate How to Reverse of the Arrow of 
Time - MIT Technology Review

Physicists Demonstrate How to Reverse of the Arrow of Time - MIT Technology 
Review

http://flip.it/Kq0KC4

[Vo]:High-temperature pairing in a strongly interacting two-dimensional Fermi gas

[Mark Jurich]

FYI (First appeared on arXiv in May, 2017):

https://www.sciencedaily.com/releases/2017/12/171222092504.htm
http://science.sciencemag.org/content/early/2017/12/20/science.aan5950
https://arxiv.org/abs/1705.10577

"The nature of the normal phase of strongly correlated fermionic systems is an 
outstanding question in quantum many-body physics. We use spatially resolved 
radio-frequency spectroscopy to measure pairing energy of fermions across a 
wide range of temperatures and interaction strengths in a two-dimensional gas 
of ultracold fermionic atoms. We observe many-body pairing at temperatures far 
above the critical temperature for superfluidity. In the strongly interacting 
regime, the pairing energy in the normal phase significantly exceeds the 
intrinsic two-body binding energy of the system and shows a clear dependence on 
local density. This implies that pairing in this regime is driven by many-body 
correlations, rather than two-body physics. Our findings show that pairing 
correlations in strongly interacting two-dimensional fermionic systems are 
remarkably robust against thermal fluctuations."

Some excerpts from/following above links:

"We perform our experiments with a two-component mixture of 6Li atoms with 
approximately 3 × 104 particles per spin state that are loaded into a single 
layer of an anisotropic harmonic optical trap."

"Using a technique known as radio-frequency spectroscopy, the researchers 
measured the response of the atoms to a radio-wave pulse. From this response, 
they could tell exactly whether or not the particles were paired and in what 
way."

"Beyond this previously explored regime, our measurements reveal that many-body 
effects enhance the pairing energy far above the critical temperature, with the 
maximum enhancement occurring at ln(kFa2D) ≈ 1, where a reliable mean-field 
description is not available."

[Vo]:Article: Physicists Demonstrate How to Reverse of the Arrow of Time - MIT Technology Review

[Jack Cole]

Physicists Demonstrate How to Reverse of the Arrow of Time - MIT Technology
Review

http://flip.it/Kq0KC4