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dr pavel im cia he wasnt alone uh you dont get to bring friends theyre not my friends dont worry no charge for them and why would i want them they were trying to grab your prize they work for the mercenary the masketta man bane aye get them on board ill call ittin the flight plan i just filed with the agency lists smee maimen doctor pavelheer button lee juan ovyu first one to talk gets to stay on my aircraft who paid you to grab dr pavel he didnt fly so good who wants to try next tell me about bane why does he wear the mask a lotta loyalty for a hired gun or perhaps he's wondering why someone would shoot a man before throwing him out of a plane at least you can talk who are you it doesnt matter who we are what matters is our plan if i pull that off will you die it would be extremely painful youre a big guy for you was getting caught part of your plan of course dr pavel refused our offer in favor of yours we had to find out what he told you nothing i said nothing well congratulations you got yourself caught sir now whats the next step of your master plan crashing this plane with no survivors no they expect one of us in the wreckage brother have we started the fire yes the fire rises calm down doctor nows not the time for fear that comes later


Apr
25
comment About shift operators
I'll answer your question if you tell my if $A^\sigma C\rho^\dagger$ is negative or positive. Protip: Write down the definitions of the three symbols and write down that expression in using the definitions.
Apr
17
comment System of two harmonic oscillators and its quantum partition function
@sandstone: In the sum of the partition function, you deliberately double count two equal energies. If that's what your asking.
Apr
17
comment How many solutions to the Einstein Field equations are known?
Since it's not clear what you already know, this Wikipedia article as first reference. (Strictly speaking, nobody can know the answer to your question, of course. That makes it into a "which solutions do you know"-list kind of question.)
Apr
14
comment Boltzmann Distribution - why maximum number of microstates?
@innisfree: I linked to that postulate in the comment you criticized, and it discusses motivations.
Apr
14
comment Boltzmann Distribution - why maximum number of microstates?
@innisfree: None that I would have fun writing down. We count states and more states for an energy means that energy is more likely. Hence, if we want to cut it down to the macroscopic realization, the extremal one will be the most relevant. Imho the math speaks for itself, but he asked for further intuition regarding where the quest for the maximum comes in.
Apr
14
comment Boltzmann Distribution - why maximum number of microstates?
You have a bunch of different energy levels (hair colours), and for each level $E$, there are a number of states (girls) with that energy. The premise is that if you have to guess which energy is most realistic, you should choose the one with the most representatives. (Then, for the derivation of the Boltzmann distribution, you want to observe that probability for joint systems is multiplicative in $\mathbb R$, the energy fraction $E/T$ is additive in $\mathbb R$, and $\exp$ is the homomorphism from $\cdot$ to $+$.)
Apr
14
comment Boltzmann Distribution - why maximum number of microstates?
Most of the girls in Sweden are blond. You make up a story to your friend of how you made out with a beautiful Swedish girl. What hair colour should you tell him the girl had, if you want to make it realistic?
Apr
9
comment The derivation of fractional equations
Exactly this is indeed done here.
Apr
4
comment The unreasonable effectiveness of the partition function
I ask this question here.
Mar
31
comment What algebraic structure does the collection of all physical quantities form?
@Jimmy360: If you type "C* algebra" in the search bar, you get 2675 results. Or try "Lie group", "Lie algbera", etc.
Mar
28
comment What is the function type of the generalized momentum?
Thanks for the answer - is there a reasonable name for the pullback of the momentum function?
Mar
28
comment What is the function type of the generalized momentum?
@yuggib: My point was that the Poisson bracket is defined as derivatives w.r.t. q and p, and on the rigth side we take such derivatives of q and p. On the left, on the other hand, we need to speak of trajectories. That's why they are odd, without pointing out where we substitute what.
Mar
28
comment What is the function type of the generalized momentum?
@yuggib: It seems to me that equations stated like ${\dot q}=\{q,H\}$ and ${\dot p}=\{p,H\}$ are completely odd, no matter which of the two perspectives you take.
Mar
23
comment Which physics quantities are real and which just a tool in the Newtonian apporach?
@ShingLau: The problem with "physical meaning means: mathematics with physics reality/something real" is that for every physical quantity in your theory of choice, you will find a theory of fundamental physics where is arises as some composite object, and then it will be easy to argue that it's just a tool. Quantum mechanics defines a force like F=ma as some average, and only late into the theory. Some recent theories will have space and time itself emerges form other quantities. What do you really mean with a question like "what does XXX tell us about reality?" and "physical sense"?
Mar
16
comment Why is light called an 'electromagnetic wave' if it's neither electric nor magnetic?
Coming back to this answer which I gave 3 years ago, I feel it's a bit cryptic. The gist of my thinking is that I don't think peoples questions, if formulated in a misguided (inherently confusing) conception of physics, math and language, should maybe not be answered in their own terms. This just reinforces their ideas and turns them into people who themselves give non-explanatory explanations (answers that just move the question around).
Mar
12
comment Kerr metric Christoffel symbols
@ChrisWhite: But it's easier than doing the same thing by hand.
Mar
12
comment Kerr metric Christoffel symbols
Nice. In a similar spirit (on the Robertson-Walker kind of metrics in different coordinates), I found this and this reference very helpful.
Mar
11
comment Why isn't the path integral rigorous?
It's 'excellent and pedagogical' compared to what other presentation?
Mar
10
comment Which values of the Riemann zeta funtion at negative arguments come up in physics?
I guess your thesis is finished by now, where can it be read?
Mar
6
comment General solution of the four-vector with each component satisfying the wave-equation
@KyleKanos: Mhm, how do you define homogeneity, if you have to know the equation to see it it's homogenous? If $D$ is any operator, the equation $D\phi=0$ is homogenous w.r.t. $\phi$ and the equation $D\phi=f$ (where $f$ a function of $\phi$) isn't. Btw. the field $A(x):=\int B(p)\,{\mathrm e}^{i\,p,x}\,{\mathrm d}p$ is also a solution to the Helmholtz equation $(\frac{\partial^2}{\partial x^2}+k^2)A(x)=0$, if $p^2=k^2$ for each $p$.