Nonlocality
Encyclopedia
In Classical physics
, nonlocality is the direct influence of one object on another, distant object. In Quantum mechanics
, nonlocality refers to the absence of a local
, realist
model in agreement with quantum mechanical predictions.
Nonlocality may refer to:
Classical physics
What "classical physics" refers to depends on the context. When discussing special relativity, it refers to the Newtonian physics which preceded relativity, i.e. the branches of physics based on principles developed before the rise of relativity and quantum mechanics...
, nonlocality is the direct influence of one object on another, distant object. In Quantum mechanics
Quantum mechanics
Quantum mechanics, also known as quantum physics or quantum theory, is a branch of physics providing a mathematical description of much of the dual particle-like and wave-like behavior and interactions of energy and matter. It departs from classical mechanics primarily at the atomic and subatomic...
, nonlocality refers to the absence of a local
Principle of locality
In physics, the principle of locality states that an object is influenced directly only by its immediate surroundings. Experiments have shown that quantum mechanically entangled particles must violate either the principle of locality or the form of philosophical realism known as counterfactual...
, realist
Scientific realism
Scientific realism is, at the most general level, the view that the world described by science is the real world, as it is, independent of what we might take it to be...
model in agreement with quantum mechanical predictions.
Nonlocality may refer to:
- Action at a distanceAction at a distance (physics)In physics, action at a distance is the interaction of two objects which are separated in space with no known mediator of the interaction. This term was used most often in the context of early theories of gravity and electromagnetism to describe how an object responds to the influence of distant...
in classical physics - Quantum nonlocalityQuantum nonlocalityQuantum nonlocality is the phenomenon by which measurements made at a microscopic level necessarily refute one or more notions that are regarded as intuitively true in classical mechanics...
arising from measurement correlations on quantum entangled states - The Aharonov–Bohm effect
- Nonlocal Lagrangian