Glossary of Symbols
a
lattice parameter
A, α
coefficients in the Lagrangian of sine-Gordon field
α, α ik
tensor of dislocation density
a o
amplitude of the fundamental oscillation for a system of two masses
b
Burgers vector
β
tensor of distorsion
c
sound velocity, critical velocity of the wave equation
C, C ikrs Hooke’s tensor
c L
vacuum light velocity
c l
longitudinal sound velocity
c L
transversal sound velocity
c o
critical velocity of sine-Gordon equation
d
interlattice-plane distance
D
force constant of a dislocation
D m
force constant of a dislocation
D
force constant, spring stiffness
D N
force constant, spring stiffness
δ
non-integrable increment of a function
δ(x)
Dirac’s function
δ ik
Kronecker symbol
Laplacian
increment of a physical quantity
e
energy density of a field
E
Energy of a mass
E
modulus of elasticity of
E
modulus of elasticity of a dislocation
E, E
energy of a mass in the reference systems o and
E e f f
effective modulus of elasticity
E kin
kinetic energy
© The Editor(s) (if applicable) and The Author(s), under exclusive
license to Springer Nature Singapore Pte Ltd. 2020
H. Günther, Elementary Approach to Special Relativity,
https://doi.org/10.1007/978-981-15-3168-2
339