What is emptiness (as in, the space between matter) according

>>7672795
undeformed spacetime

>>7672795
It's the vector that belongs to the kernel of every symmetry generator of your theory.

>>7672795
Strings

It's not all that different from emptiness in Euclidean space, really. It's just a different vector space.

>>7672795
The lack of memes.

>>7672817
>undeformed
No.

>>7672857
Yes. As far as we know spacetime in our universe is pretty flat

>>7672870
He said

>as in, the space between matter

Not necessarily cosmological scales.

>>7672795
Technically there is no empty space. Quantum fluctuations are constantly happening in every part of the universe, creating and subsequently destroying tiny subatomic particles everywhere all the time. At absolute zero i think this would cease?

>>7672890
>At absolute zero i think this would cease?
QFT is formulated at zero kelvin. Non-equilibrium QFT is the one at finite temperature.

>>7672795
Potential.
Space/time not occupied by matter.

File: einstein_space_time_s.jpg (6KB, 255x123px) Image search: [Google]

6KB, 255x123px

>>7672795
Gravity is everywhere. Space is an abstraction without physical existence; a thought.

Dark matter/energy.