In a mechanical system, a ground state is a quantum state of minimal energy.

quantum probability theory – observables and states

states

classical state

quantum state

qbit, dimer, tensor network state

space of states (in geometric quantization)

state on a star-algebra, quasi-state

probability amplitude, quantum fluctuation

pure state

wave function

bra-ket

superposition, quantum interference

quantum measurement

wave function collapse

measurement problem

superselection sector

mixed state, density matrix

entanglement entropy

holographic entanglement entropy

coherent quantum state

ground state, excited state

quasi-free state

Fock space, second quantization

vacuum, vacuum state

Hadamard state

vacuum diagram

vacuum expectation value, vacuum amplitude, vacuum fluctuation

vacuum energy

vacuum polarization

interacting vacuum

thermal vacuum, KMS state

vacuum stability

theta vacuum

perturbative string theory vacuum

non-geometric string theory vacuum

landscape of string theory vacua

entangled state

tensor network state

matrix product state

tree tensor network state

observables

quantum observable, beable

algebra of observables, star-algebra

Bohr topos

quantum operator (in geometric quantization)

quantum operation, quantum effect, effect algebra

in quantum field theory

local observable

polynomial observable

linear observable

regular observable

microcausal observable

normal-ordered product, time-ordered products, retarded product

Wick algebra

scattering amplitude

interacting field algebra of observables, Bogoliubov's formula

GNS construction

theorems

order-theoretic structure in quantum mechanics

Gleason's theorem

Alfsen-Shultz theorem

Harding-Döring-Hamhalter theorem

Kochen-Specker theorem

Nuiten's lemma

no-cloning theorem

Bell's theorem

Last revised on February 8, 2020 at 05:39:45. See the history of this page for a list of all contributions to it.