Quantum mechanics for fields everywhere.

Information theory adapted to deal with information held and/or handled by quantum systems, i.e., in which information is measured in qubits instead of classical bits.

In gauge theory and mathematical physics, a topological quantum field theory (or topological field theory or TQFT) is a quantum field theory which computes topological invariants.

all variations and generalizations of Gaussian integrals to the complex plane and to multiple dimensions.

The old quantum theory is a collection of results from the years 1900–1925 Extract of page 28 which predate modern quantum mechanics.