Pseudoscalar

A pseudo-scalar is a scalar quantity that changes sign under space reflections. So a pseudoscalar has parity -1.

A pseudoscalar object property handedness: A right hand appears in the mirror as the left.

Other examples

A pseudoscalar arises, for example, as the scalar product of a direction vector with a rotation vector, rotation vectors in turn as a cross product of two direction vectors - a total of a triple product:

A physical example of the magnetic flux through an area. It is defined as the scalar product of the magnetic flux density of a rotating vector with the normal vector of the surface.

The pion is a so-called pseudoscalar particles. Under Lorentz transformations his quantum mechanical wave function behaves like a scalar, but with negative parity.

Angular momentum, as a cross product of momentum and position vector, a rotation vector with amount and axis of rotation. The combination of rotation with a moving direction along the axis results in helicity. At the helicity of elementary particles, the parity violation is the β -decay.

• Field theory
• Symmetry (Physics)