User Trajan

13 votes

1 answer

2k views

Why does Planck's constant appear in classical statistical mechanics [duplicate]

asked May 4, 2015 at 11:57

7 votes

2 answers

5k views

Resources for introductory quantum statistical mechanics

asked Apr 21, 2015 at 12:03

4 votes

1 answer

352 views

Where does the expression $\langle q \mid p\rangle=\frac{1}{(2\pi\hbar)^{n/2}}e^{i q\cdot p/\hbar}$ come from? [duplicate]

asked Apr 25, 2015 at 14:43

4 votes

2 answers

5k views

Calculating quantum partition functions

asked Apr 16, 2015 at 20:12

4 votes

1 answer

595 views

Mean field theory Weiss Approximation for the Isling Model of a Protein

asked May 12, 2015 at 11:10

4 votes

1 answer

244 views

Finding $p(z), \rho(z)$ of an ideal classical gas in a box

asked May 8, 2015 at 16:06

3 votes

2 answers

1k views

Why might Roger Penrose argue that Godel's incompleteness theorem(s) suggest that consciousness is non-algorithmic? [closed]

asked Aug 27, 2018 at 19:04

3 votes

4 answers

4k views

Understanding the difference between timelike and spacelike separations

asked Dec 18, 2018 at 22:33

3 votes

1 answer

145 views

Why does $tr \ e^{-\frac{i}{h}\hat{H}t}= \int d^nr \left< \textbf{r}| e^{-\frac{i}{h}\hat{H}t} | \textbf{r} \right>$ hold?

asked Mar 9, 2015 at 13:32

3 votes

1 answer

102 views

Computing $\langle0|T[Q(t_2)Q(t_1)]|0\rangle$

asked Mar 10, 2015 at 23:08

3 votes

1 answer

574 views

How do I show that a given Hamiltonian does not affect the overall number of particles in a given state?

asked Feb 18, 2015 at 14:32

3 votes

1 answer

2k views

Finding the equation of state from a thermodynamical potential

asked May 7, 2015 at 8:45

2 votes

1 answer

6k views

How do we find the phase space density from the Hamiltonian?

asked May 6, 2015 at 12:27

2 votes

1 answer

129 views

Directions and Order of Theoretical Physics post Relativity and Quantum Mechanics [closed]

asked Jan 26, 2018 at 17:14

2 votes

0 answers

63 views

Pictures of Different Coordinate Systems in General Relativity

asked Dec 26, 2018 at 15:09

2 votes

2 answers

316 views

Why is information indestructible in quantum mechanics? [duplicate]

asked Jan 30, 2019 at 11:15

2 votes

1 answer

438 views

Calculating average quantities in kinetic theory

asked May 16, 2015 at 14:20

1 vote

1 answer

397 views

Changing the zero-point energy

asked May 22, 2015 at 13:59

1 vote

1 answer

52 views

Struggling with whether its $\pm p dV $

asked May 23, 2015 at 18:21

1 vote

1 answer

123 views

Classifying regions of Van der Waal like gas

asked May 11, 2015 at 16:59

1 vote

1 answer

406 views

Radius of Star, The Schwarzschild metric and Black Holes

asked Dec 25, 2018 at 13:29

1 vote

1 answer

345 views

Classical Limit of Quantum Mechanics recovered from the Path Integral Formalism

asked Feb 4, 2018 at 11:34

1 vote

0 answers

224 views

Temperature change in adiabatic free expansion

asked May 5, 2015 at 11:48

1 vote

0 answers

511 views

Finding the phase space density of $N$ harmonic oscillators

asked May 5, 2015 at 12:22

1 vote

1 answer

448 views

The grand partition function of non interacting hamiltonians

asked May 5, 2015 at 19:24

1 vote

1 answer

421 views

Summing over quantum states

asked Apr 21, 2015 at 9:35

1 vote

2 answers

93 views

Understanding notation regarding particles states and wavefunctions

asked Apr 24, 2015 at 11:58

1 vote

1 answer

2k views

System of two harmonic oscillators and its quantum partition function

asked Apr 17, 2015 at 12:15

1 vote

2 answers

930 views

Number of microstates compatible with two boxes

asked Apr 19, 2015 at 11:08

1 vote

1 answer

757 views

Proving the Virial theorem

asked Apr 20, 2015 at 9:29

Stack Exchange Network

56 Questions

Why does Planck's constant appear in classical statistical mechanics [duplicate]

Resources for introductory quantum statistical mechanics

Where does the expression $\langle q \mid p\rangle=\frac{1}{(2\pi\hbar)^{n/2}}e^{i q\cdot p/\hbar}$ come from? [duplicate]

Calculating quantum partition functions

Mean field theory Weiss Approximation for the Isling Model of a Protein

Finding $p(z), \rho(z)$ of an ideal classical gas in a box

Why might Roger Penrose argue that Godel's incompleteness theorem(s) suggest that consciousness is non-algorithmic? [closed]

Understanding the difference between timelike and spacelike separations

Why does $tr \ e^{-\frac{i}{h}\hat{H}t}= \int d^nr \left< \textbf{r}| e^{-\frac{i}{h}\hat{H}t} | \textbf{r} \right>$ hold?

Computing $\langle0|T[Q(t_2)Q(t_1)]|0\rangle$

How do I show that a given Hamiltonian does not affect the overall number of particles in a given state?

Finding the equation of state from a thermodynamical potential

How do we find the phase space density from the Hamiltonian?

Directions and Order of Theoretical Physics post Relativity and Quantum Mechanics [closed]

Pictures of Different Coordinate Systems in General Relativity

Why is information indestructible in quantum mechanics? [duplicate]

Calculating average quantities in kinetic theory

Changing the zero-point energy

Struggling with whether its $\pm p dV $

Classifying regions of Van der Waal like gas

Radius of Star, The Schwarzschild metric and Black Holes

Classical Limit of Quantum Mechanics recovered from the Path Integral Formalism

Temperature change in adiabatic free expansion

Finding the phase space density of $N$ harmonic oscillators

The grand partition function of non interacting hamiltonians

Summing over quantum states

Understanding notation regarding particles states and wavefunctions

System of two harmonic oscillators and its quantum partition function

Number of microstates compatible with two boxes

Proving the Virial theorem