Field Operator for Edge States

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SUMMARY

The discussion centers on the derivation of the field operator for Bogoliubov quasiparticles in edge states, specifically addressing equation (1.15) from a set of notes. The participant expresses clarity up to equation (1.14), which pertains to the edge state of the first-quantized Hamiltonian, but seeks clarification on the transition to the field operator in (1.15). The conversation references equations (1.49) and (1.50), highlighting a generalized real-space formulation compared to the conventional k-space approach.

PREREQUISITES
  • Understanding of first-quantized Hamiltonians
  • Familiarity with Bogoliubov quasiparticles
  • Knowledge of edge states in quantum systems
  • Proficiency in real-space versus k-space representations
NEXT STEPS
  • Study the derivation of the Bogoliubov transformation in edge states
  • Examine the implications of equations (1.49) and (1.50) in the context of quasiparticle theory
  • Research the differences between real-space and k-space formulations in quantum mechanics
  • Explore advanced topics in quantum field theory related to edge states
USEFUL FOR

Quantum physicists, researchers in condensed matter physics, and students studying edge states and quasiparticle dynamics will benefit from this discussion.

thatboi
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I'm currently looking at the following set of notes and am confused at equation (1.15) where they discuss the Bogoliubov quasiparticle for the edge states. I understand up to equation (1.14), where they have solved for the edge state of the first-quantized Hamiltonian. What I don't understand is how they derived the field operator in (1.15).
 
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In case people are curious, see the following eqns (1.49) and (1.50) in these notes and references therein. It is a generalized real-space version of what is usually used in k-space.
 

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