Question: Variables with Indices

I would like to index Variable names like how it is common in physics (just as an addition to the variable name to distinct between say ta and tb just as two different times). However i am not sure how to do this and make maple treat for example ta EXACTLY like if it would be called ta.

int(1/2*m*(-x[b]+x[a])^2/(-tb+ta)^2,t = ta .. tb)

is evaluated but

int(1/2*m*(-x[b]+x[a])^2/(-t[b]+t[a])^2,t = t[a] .. t[b])

is not.

Is there any way to use indices AND let maple treat them like if they weren't indexed?

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