3 papers
hep-th2026
Variable-mass sine-Gordon with point defects: integrability, soliton transmission, and quasi-conservation
A. R. Aguirre, H. Blas, H. F. Callisaya +1
We study integrable variable-mass sine-Gordon model (vmSG) with point defects. Using the Lax and Bäcklund-gauge formulations, we construct type-I and type-II defect matrices, deriv…
quant-ph2025
Scalable Quantum Walk-Based Heuristics for the Minimum Vertex Cover Problem
F. S. Luiz, A. K. F. Iwakami, D. H. Moraes +1
We propose a novel heuristic quantum algorithm for the Minimum Vertex Cover (MVC) problem based on continuous-time quantum walks (CTQWs). In this framework, the coherent propagatio…
quant-ph2025
Absorption-based qubit estimation in discrete-time quantum walks
Edgard P. M. Amorim, Lorena R. Cerutti, O. P. de Sá Neto +1
We investigate state estimation in discrete-time quantum walks with a single absorbing boundary. Using a spectral approach, we obtain closed expressions for the escape probability…