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Jun
5
accepted Why do ice cubes make a cracking sound when placed in fizzy wine (Prosecco)?
Jun
4
awarded  Citizen Patrol
Jun
4
comment Why do ice cubes make a cracking sound when placed in fizzy wine (Prosecco)?
Prosecco was poured into the glass first, once it settled the ice cubes were dropped in.
Jun
4
comment Why do ice cubes make a cracking sound when placed in fizzy wine (Prosecco)?
Not sure if there is anything special about wine, I used Prosecco but it may be that the effect is the same with soda. I imagine that the physics of the phenomenon would tell us if the effect is the same with all carbonated drinks. Thanks for the image.
Jun
4
asked Why do ice cubes make a cracking sound when placed in fizzy wine (Prosecco)?
May
24
comment Is particle entanglement a binary property?
It's the other way around. Entanglement measures are defined so that they are $E(\rho)>0$ if and only if the state $\rho$ is entangled. There are also many measures of entanglement. The form a separable state takes, however, was defined decades before the measures of entanglement were developed. For a nice review I recommend reading arxiv.org/abs/quant-ph/0504163
May
24
answered Is particle entanglement a binary property?
May
24
answered Can a single molecule have a temperature?
May
23
comment How do you come up with a POVM?
That's right. You need to do what's called measurement tomography, which is the same thing as state tomography but instead of engineering the right measurements you engineer the right states to measure. The basic idea is have a set of states that form a complete basis in the Hilbert-Schmidt space of operators, measure them repeatedly and use the resulting expectations to reconstruct the matrix elements. See for example nature.com/nphys/journal/v5/n1/abs/nphys1133.html
May
23
answered Is the preferred basis problem solved?
May
23
answered How do you come up with a POVM?
May
21
revised What is the general statistical definition of temperature?
added 71 characters in body
May
21
comment What is the general statistical definition of temperature?
Yes, but what if for example you have exact information about all the particles in your system (ie full momentum-position information), then temperature will cease to be useful. If you are lucky enough for the particles to be in the ground state then you can set it to zero, otherwise not sure how you can continue this representation.
May
21
comment What is the general statistical definition of temperature?
Thanks, updated.
May
21
revised What is the general statistical definition of temperature?
added 9 characters in body
May
21
answered What is the general statistical definition of temperature?
May
18
answered Is every quantum measurement reducible to measurements of position and time?
May
17
comment How do we simulate Nuclear explosion?
It's not necessarily a bad question, just needs to be clarified a bit. Are you trying to simulate the look of the explosion, the force resulting from the explosion, hydrodynamics of the surrounding atmosphere (and how far away are we talking?)? If you can clarify further I am sure somebody might be able to help you.
May
17
answered Definition of the entropy
May
17
answered Is decoherence even possible in anti de Sitter space?