Is it considered that there is a minimum parcel of time, or can it be divided infinitely to zero ?

15 minutes ago, mistermack said:

Is it considered that there is a minimum parcel of time, or can it be divided infinitely to zero ?

There is no finite limit to how small a time interval between events can be (in QM, SM, SR, and GR.)

You might lookup Planck Time 

https://simple.m.wikipedia.org/wiki/Planck_time

1 hour ago, iNow said:

You might lookup Planck Time 

https://simple.m.wikipedia.org/wiki/Planck_time

Thank you for mentioning it. This reminded me about the question I wanted to ask for some time:

Is Planck time the shortest time only in combination of GR with QM? In other words, it is the shortest neither in the standard QM nor in the standard GR, but only if GR is extrapolated to very small distances? If so, how certain it is as there is no established theory of quantum gravity?

Another question:

If t_P is a short interval measurable in some rest frame, wouldn't we be able to measure a shorter part of it if we move fast enough relative to that frame, because of the time dilation? (I.e., t_P in the rest frame will become γt_P in our frame which is >t_P)

Edited January 11, 20232 yr by Genady