Register to reply

Criteria of periodic boundary condition

by mmssm
Tags: boundary, condition, criteria, periodic
Share this thread:
mmssm
#1
Jan23-13, 10:41 PM
P: 4
We used to apply periodic boundary condition to simulate an infinite system. What will happen if the interactions between atoms do not drop to zero even when they are infinitely far away? Is the periodic boundary still valid? How can I prove the periodic boundary condition is valid or not? thanks.
Phys.Org News Partner Physics news on Phys.org
'Squid skin' metamaterials project yields vivid color display
Scientists control surface tension to manipulate liquid metals (w/ Video)
Simulation method identifies materials for better batteries
DrDu
#2
Jan24-13, 01:50 AM
Sci Advisor
P: 3,628
This is indeed a problem, encountered e.g. when you consider a system with dipoles.
There exist methods to split off the long range part of the fields, namely Ewald summation.


Register to reply

Related Discussions
Find initial condition such that ODE solution is periodic Differential Equations 0
Jordan wigner transform and periodic boundary condition Quantum Physics 4
Does any lattice or lattice shape has a periodic boundary condition? Classical Physics 4
Periodic Boundary Condition General Physics 2