Module aloha_object

Classes

P
Helas Object for an Impulsion

PSlash
Gamma Matrices

Mass
Helas Object for a Mass

OverMass2
Helas Object for 1/M**2

Width
Helas Object for an Impulsion

Scalar
Helas Object for a Spinor

Spinor
Helas Object for a Spinor

Vector
Helas Object for a Vector

Spin2
Helas Object for a Spin2

Gamma
Gamma Matrices

Sigma
Sigma Matrices

Gamma5

Epsilon
The fully anti-symmetric object in Lorentz-Space

Metric

Identity

ProjM
A object for (1-gamma5)/2

ProjP
A object for (1+gamma5)/2

DenominatorPropagator
The Denominator of the Propagator

Functions

give_sign_perm(perm0, perm1)
Check if 2 permutations are of equal parity.

source code

SpinorPropagator(spin1, spin2, particle)

source code

VectorPropagator(l1, l2, part)

source code

Spin3halfPropagator(mu, nu, s1, s2, part)

source code

Spin2masslessPropagator(mu, nu, alpha, beta)

source code

Spin2Propagator(mu, nu, alpha, beta, part)

source code

Variables

__package__ = 'aloha'

Function Details

Check if 2 permutations are of equal parity.

Assume that both permutation lists are of equal length and have the same elements. No need to check for these conditions.