A state of zero energy in a quantum field.

A state of infinite energy in a quantum field.

A state of negative energy in a quantum field.

A state of positive energy in a quantum field.

The attractive force between two uncharged conducting plates in a vacuum.

The repulsive force between two uncharged conducting plates in a vacuum.

The attractive force between two charged conducting plates in a vacuum.

The repulsive force between two charged conducting plates in a vacuum.

The energy difference between two energy levels of an electron in an atom.

The energy difference between two energy levels of a proton in an atom.

The energy difference between two energy levels of a neutron in an atom.

The energy difference between two energy levels of a quark in an atom.

The thermal radiation emitted by a black hole.

The thermal radiation emitted by a white hole.

The thermal radiation emitted by a neutron star.

The thermal radiation emitted by a quark star.

The acceleration of an observer in a vacuum.

The deceleration of an observer in a vacuum.

The rotation of an observer in a vacuum.

The translation of an observer in a vacuum.

The thermal radiation emitted by an accelerating observer in a vacuum.

The thermal radiation emitted by a decelerating observer in a vacuum.

The thermal radiation emitted by a rotating observer in a vacuum.

The thermal radiation emitted by a translating observer in a vacuum.

The creation of electron-positron pairs from the vacuum by a strong electric field.

The creation of electron-positron pairs from the vacuum by a strong magnetic field.

The creation of electron-positron pairs from the vacuum by a strong gravitational field.

The creation of electron-positron pairs from the vacuum by a strong nuclear field.

The uncertainty in the position and momentum of a particle.

The uncertainty in the energy and time of a particle.

The uncertainty in the angular momentum and spin of a particle.

The uncertainty in the charge and mass of a particle.

No two electrons can have the same set of quantum numbers.

No two protons can have the same set of quantum numbers.

No two neutrons can have the same set of quantum numbers.

No two quarks can have the same set of quantum numbers.

A diagram that represents the interaction of particles in a quantum field theory.

A diagram that represents the interaction of particles in a classical field theory.

A diagram that represents the interaction of particles in a statistical field theory.

A diagram that represents the interaction of particles in a nuclear field theory.

A group of transformations that rescale the parameters of a quantum field theory.

A group of transformations that rescale the fields of a quantum field theory.

A group of transformations that rescale the masses of the particles in a quantum field theory.

A group of transformations that rescale the charges of the particles in a quantum field theory.

A formulation of quantum field theory on a discrete lattice.

A formulation of quantum field theory on a continuous lattice.

A formulation of quantum field theory on a curved lattice.

A formulation of quantum field theory on a flat lattice.

A method for generating random numbers.

A method for solving differential equations.

A method for solving integral equations.

A method for solving algebraic equations.

A formulation of quantum field theory that uses the path integral to calculate physical quantities.

A formulation of quantum field theory that uses the path integral to calculate the wave function of a particle.

A formulation of quantum field theory that uses the path integral to calculate the energy of a particle.

A formulation of quantum field theory that uses the path integral to calculate the momentum of a particle.

A correspondence between a four-dimensional anti-de Sitter space and a three-dimensional conformal field theory.

A correspondence between a four-dimensional de Sitter space and a three-dimensional conformal field theory.

A correspondence between a four-dimensional Minkowski space and a three-dimensional conformal field theory.

A correspondence between a four-dimensional Euclidean space and a three-dimensional conformal field theory.