Absolute zero—the most appropriate temperature for both quantum experiments and quantum computing—makes it easier to describe a system by relying on a set of fundamental propositions. One of them, the ...

In thermodynamics, an "adiabatic process" is a system change that transfers no heat in or out of the system. Any and all energy change in that system are therefore accomplished by doing work on the ...

The adiabatic theorem – a fundamental achievement of quantum mechanics – was first formulated by Max Born and Vladimir Fock at the dawn of quantum mechanics. The theorem ensures that the evolving ...

We prove the existence of a unitary transformation that enables two arbitrarily given Hamiltonians in the same Hilbert space to be transformed into one another. The result is straightforward yet, for ...

Adiabatic processes play a major role both in physics and technology. The adiabatic process in thermodynamics is formally defined as a process in which no heat is transferred to the system from the ...