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5 votes
1 answer
354 views

Are Hamilton's equations reversible?

Say I define a time dependent vector field $\Psi(t):\mathbb{R}^d\to \mathbb{R}^d$ as reversible (also here) if, for $f(x,y)=(x,-y)$, we have: $$ f\circ \Psi \circ f =\Psi(-t)=\Psi^{-1}(t).$$ Just to ...
blobman man's user avatar
4 votes
1 answer
1k views

Reversibility of Hamiltonian dynamics

I'm trying to understand a very basic property of Hamiltonian dynamics. I don't have a physics background but I do know some mathematics. I want to understand why negating the momentum is equivalent ...
5d41402abc4's user avatar
2 votes
2 answers
451 views

Are the thermoelectric effects reversible?

On the one hand, it is commonly said that thermoelectric effects are reversible. For Wikipedia they are thermodynamically reversible because as the factor of merit ZT approaches infinity, the ...
untreated_paramediensis_karnik's user avatar