Solving Statistical Physics Equations of Motion for N-Particle Systems

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SUMMARY

This discussion focuses on solving statistical physics equations of motion for N-particle systems, specifically using the Hamiltonian formulation. The Hamiltonian is defined as H = ∑(p_i²/2m) + V(q1, q2, ..., qN). The equations of motion are derived as dp_i/dt = -dH/dp_i and dq_i/dt = p_i/m. The challenge of solving these equations increases significantly with larger N, leading to lengthy computation times. The conversation also touches on the concept of negative temperature in statistical mechanics.

PREREQUISITES
  • Understanding of Hamiltonian mechanics
  • Familiarity with equations of motion
  • Knowledge of statistical mechanics principles
  • Basic concepts of potential energy functions
NEXT STEPS
  • Research advanced techniques in Hamiltonian dynamics
  • Explore computational methods for solving N-body problems
  • Learn about stochastic processes in statistical physics
  • Investigate the implications of negative temperature in thermodynamics
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Physicists, researchers in statistical mechanics, and students studying advanced dynamics of particle systems will benefit from this discussion.

eljose
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Let be an statistical system of N particles with their Hamiltonian..

[tex]H=\sum_{i=0}^{N}\frac{p_{i}^{2}}{2m}+V(q1,q2,...,qN)[/tex]

then you could obtain their equations of motion in the form:

[tex]dp_{i}/dt=-dH/dp_{i}[/tex] and [tex]dq_{i}/dt=p_{i}/m[/tex]

but of course if N is big you could take years and years to solve it..but there wouldn,t be an easier formula..(or an approach) to obtain and solve Newton,s equation of motion for this system (considering stochastic or similar) by means of a functional of the q,s in the sense [tex]Q(q1,q2,q3,q4,...qN)[/tex]
 
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may i know what is the meaning of negative temperature?
 

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