From the 1 of 3 linked papers with an AI index.
3 papers
quant-ph2026
Fermion Doubling in Dirac Quantum Walks
Chaitanya Gupta, Anthony J. Short
The paper investigates fermion doubling and pseudo‑doubling problems in discrete‑spacetime quantum walk models of Dirac particles and introduces a family of quantum walks that avoi…
quant-ph2026
Recurrence Time for Finite Quantum Systems
Chaitanya Gupta, Anthony J. Short
We study the time it takes for all states of a finite quantum system to return simultaneously to their original configuration. In particular, we define the recurrence time for a qu…
quant-ph2025
The Dirac Vacuum in Discrete Spacetime
Chaitanya Gupta, Anthony J. Short
We consider introducing the Dirac sea in a quantum cellular automata model of fermions in discrete spacetime which approximates the Dirac equation in the continuum limit. However,…