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eljose79
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What is called in physics the third quantization?..what is used for... and what is its math background?..
Third quantization is a theoretical framework in quantum mechanics that extends the concept of quantization to include the quantization of the quantum fields themselves, rather than just the quantization of particles. It involves treating quantum fields as fundamental objects and studying their quantization in a similar manner to how particles are quantized in traditional quantum mechanics.
Third quantization is used to study systems with a large number of particles, such as in cosmology or condensed matter physics. It allows for a more comprehensive understanding of the dynamics of these systems and can provide insights into the behavior of quantum fields in extreme conditions, such as in the early universe or in black holes.
The mathematical formalism of third quantization involves using field operators to describe the dynamics of quantum fields. These operators satisfy commutation relations and can be used to create and annihilate particles in the field. The equations of motion for these operators are derived from the Hamiltonian of the system and can be used to study the evolution of the field over time.
In first quantization, particles are described as discrete objects with definite properties such as position and momentum. Second quantization extends this to include the quantization of particle fields, where particles are treated as excitations of the field. Third quantization goes a step further and quantizes the quantum fields themselves, rather than just the particles described by them.
While third quantization is still a theoretical framework and has not yet been directly applied in technology, it has the potential to provide insights into the behavior of quantum fields in extreme conditions. This understanding could potentially be applied in the development of new technologies, such as quantum computers or advanced propulsion systems.