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Stationary state: Quiz


Question 1: The ground state of a ________ is usually called the vacuum state or the vacuum.
RenormalizationQuantum electrodynamicsParticle physicsQuantum field theory

Question 2: Many systems have degenerate ground states, for example, the ________.
DeuteriumHydrogen atomQuantum mechanicsElectron

Question 3: The ground state of a ________ system is its lowest-energy state; the energy of the ground state is known as the zero-point energy of the system.
Wave–particle dualityQuantum mechanicsSchrödinger equationIntroduction to quantum mechanics

Question 4: According to the third law of thermodynamics, a system at ________ temperature exists in its ground state; thus, its entropy is determined by the degeneracy of the ground state.
Absolute zeroGibbs free energyThermodynamic temperatureCarbon

Question 5: In quantum mechanics, a stationary state is an ________ of a Hamiltonian, or in other words, a state of definite energy.
Eigenvalue, eigenvector and eigenspaceMatrix (mathematics)Linear algebraVector space

Question 6: Many systems, such as a perfect ________ lattice, have a unique ground state and therefore have zero entropy at absolute zero (because ln(1) = 0).
CarbonCrystal structureSolidCrystal


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