Abstract
The typical characteristic for a system of particles is the number of particles contained in the system. Every single particle has a velocity v and an inertial mass m attributed to it. The typical physical parameters of a single particle that play a crucial role in interaction between the particles are momentum \(p = m\, v\) and energy E.
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Notes
- 1.
Such particles with respect to the lattice in physics are called quasi-particles. They are called so in order to differentiate them from the particles of our outside physical space.
- 2.
We have written the mixed components of the energy–momentum tensor \(\mathbf{T} = T_a^{\;\;b}\) in the notation of (here two-dimensional) Minkowski space, with the coordinates \(x_1 = x\) and \(x_2 = t\) and the metric \((1, -\, c_o^2)\), so that \(\mathrm{div}{} \mathbf{T} = \frac{\partial }{\partial x}\, T_a^{\;\;1} + \frac{\partial }{\partial t}\, T_a^{\;\;2},\, a = 1, 2\), see (278).
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Günther, H. (2020). Particles and Fields. In: Elementary Approach to Special Relativity. Springer, Singapore. https://doi.org/10.1007/978-981-15-3168-2_22
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DOI: https://doi.org/10.1007/978-981-15-3168-2_22
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