Zero Point field

[Patrick_Mc]

Is there a clear definition of the Zero Point Field?

[badlyburnttoast]

In quantum field theory, the vacuum state (also called the vacuum) is the quantum state with the lowest possible energy. Generally, it contains no physical particles. The term “zero-point field” is sometimes used as a synonym for the vacuum state of an individual quantized field.

http://en.wikipedia.org/wiki/Zero_point_field