scholarly journals Quantum metrology for relativistic quantum fields

2014 ◽  
Vol 89 (6) ◽  
Author(s):  
Mehdi Ahmadi ◽  
David Edward Bruschi ◽  
Ivette Fuentes
Keyword(s):  
Relativistic Quantum ◽  
Quantum Metrology ◽  
Quantum Fields

scholarly journals A path integral formulation for particle detectors: the Unruh-DeWitt model as a line defect

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Ivan M. Burbano ◽  
T. Rick Perche ◽  
Bruno de S. L. Torres
Keyword(s):  
Path Integral ◽  
Degrees Of Freedom ◽  
Wilson Line ◽  
Transition Probability ◽  
Relativistic Quantum ◽  
Quantum Fields ◽  
Line Defect ◽  
Particle Detectors ◽  
Nonlocal Operators ◽  
Detector Model

Abstract Particle detectors are an ubiquitous tool for probing quantum fields in the context of relativistic quantum information (RQI). We formulate the Unruh-DeWitt (UDW) particle detector model in terms of the path integral formalism. The formulation is able to recover the results of the model in general globally hyperbolic spacetimes and for arbitrary detector trajectories. Integrating out the detector’s degrees of freedom yields a line defect that allows one to express the transition probability in terms of Feynman diagrams. Inspired by the light-matter interaction, we propose a gauge invariant detector model whose associated line defect is related to the derivative of a Wilson line. This is another instance where nonlocal operators in gauge theories can be interpreted as physical probes for quantum fields.

Relativistic Quantum Fields

1966 ◽  
Vol 34 (4) ◽  
pp. 367-367 ◽  
Author(s):  
J. D. Bjorken ◽  
S. D. Drell ◽  
Peter B. Kahn
Keyword(s):  
Relativistic Quantum ◽  
Quantum Fields

scholarly journals Relativistic Quantum Metrology in Open System Dynamics

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Zehua Tian ◽  
Jieci Wang ◽  
Heng Fan ◽  
Jiliang Jing
Keyword(s):  
System Dynamics ◽  
Open System ◽  
Relativistic Quantum ◽  
Quantum Metrology

The relativistic quantum fields of the D = 2 Ising model

1978 ◽  
Vol 72 (3) ◽  
pp. 371-374 ◽  
Author(s):  
Bert Schroer ◽  
T.T. Truong
Keyword(s):  
Ising Model ◽  
Relativistic Quantum ◽  
Quantum Fields
Sign in / Sign up

Export Citation Format

Share Document