Recent content by floyd0117

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    Question about the Hamiltonian and the third law of thermodynamics

    Okay sure, I should have said to actually change the positions rather than "shuffling" them, so that each position is new and was not realized in the previous configuration. Edit: could it be that there is in fact only one stable solution to the spatial configuration of a set of particles at...
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    Question about the Hamiltonian and the third law of thermodynamics

    The third law of quantum mechanics states that a system at absolute zero temperature has zero entropy. Entropy can be conceived as an expression of the number of possible microstates that can produce an identical macrostate. At zero entropy, there should be exactly *one* microstate configuration...
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    Initial velocity to get from on known position to another?

    I have a problem where I need to figure out the initial velocity vector \vec{v_0} of a projectile, in order for it to land at the final position \vec{r_f} = x_f\hat{x} + y_f\hat{y} + z_f\hat{z}, from initial position \vec{r_0}. ___ The only knowns in the problem are \vec{r_0} and \vec{r_f}...
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    A How to convert between different mass measurements for CDM H

    Perhaps, but I'm trying to follow the methodology presented in a specific paper and replicate their results. Thanks anyway
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    A How to convert between different mass measurements for CDM H

    I have a dataset of cluster masses, expressed in units of M_500c, which I need to relate to a velocity dispersion. But the relation between cluster mass and velocity dispersion is in terms of M_200c, so I need to convert the masses in the dataset before I can find the equivalent dispersions.
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    A How to convert between different mass measurements for CDM H

    If I have a cluster with a mass measured in M_500c, then how do I go about converting that mass to M_200c given some concentration and an NFW profile?
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