Physics
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46 Answers

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15 votes
Accepted

Why is Johnson noise a Gaussian process?

14 votes

Describe Ising model dynamics in stochastic differential equation or stochastic process

9 votes
Accepted

Itô or Stratonovich calculus: which one is more relevant from the point of view of physics?

9 votes
Accepted

What it means to integrate over $n$ variables out of $N$, where $N>n$?

7 votes

Do particle velocities in liquid follow the Maxwell-Boltzmann velocity distribution?

7 votes

Why is the harmonic oscillator so important?

5 votes
Accepted

Deriving Boltzmann statistics from the maximum entropy principle

5 votes
Accepted

Equivalent tensor order parameters of nematic liquid crystals?

4 votes
Accepted

Negative pressure

4 votes
Accepted

How to derive the backward Fokker-Planck equation from a forward Fokker-Planck equation (with state-dependent diffusion coefficient)?

3 votes
Accepted

Underdamped vs overdamped Langevin dynamics

3 votes
Accepted

What does Born Green equation signify physically?

3 votes
Accepted

Entropy of a two-level system

3 votes
Accepted

Detailed balance condition for coupled Langevin equation

3 votes
Accepted

What does "an average over noise" mean in Zwanzig's book

3 votes

Flory-Huggins ternary phase diagram with a neutral component

2 votes
Accepted

Damped Coupled Oscillations

2 votes

Is there an equation to calculate the average speed of liquid molecules?

2 votes
Accepted

Applying Euler Homogenous Function Theorem to $df$ or $f$

2 votes
Accepted

Hindered rotation model for flexible polymers: deriving the Flory characteristic ratio

2 votes
Accepted

Randomly stopped dynamics of $x(t)$: How can I find $\text{var}\{ x(t) \}$?

2 votes

Can a single molecule have a state?

2 votes
Accepted

A discrete time Ornstein-Uhlenbeck type process

2 votes

Does the value of Surface tension (the value of the constant) change with a change in surface area?

2 votes
Accepted

Is the Feynman's path integral a density?

1 vote

Ornstein–Uhlenbeck process: joint probability as a Gaussian

1 vote
Accepted

Under what conditions is mean square displacement $\text{MSD}(t)=4Dt+v^2t^2$ a valid asymmetric random walk model?

1 vote

Fokker-Planck linear potential

1 vote
Accepted

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

1 vote

Numerically solving a simple Schrodinger equation with fast Fourier transforms

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