activity
19972024
most citedThe action operator for continuous-time histories

71 citations · 222 across the 9 of their papers we have counts for

collaborators

9 papers

quant-ph2024

Relativistic Quantum Information from Unequal-Time QFT Correlation Functions

Charis Anastopoulos, Konstantina Savvidou

This paper continues on the program of developing a relativistic quantum information theory in terms of unequal-time correlation functions in quantum field theory (QFT)[arXiv:2208.…

quant-ph2023★ 5 cited

Towards a Field-Theory based Relativistic Quantum Information

Charis Anastopoulos, Bei-Lok Hu, Konstantina Savvidou

We present our program for the development of quantum informational concepts in relativistic systems in terms of the unequal-time correlation functions of quantum fields. We employ…

quant-ph2022★ 26 cited

Quantum Field Theory based Quantum Information: Measurements and Correlations

Charis Anastopoulos, Bei-Lok Hu, Konstantina Savvidou

This is the first in a series of papers aiming to develop a relativistic quantum information theory in terms of unequal-time correlation functions in quantum field theory. In this…

gr-qc2021★ 37 cited

Gravitational effects in macroscopic quantum systems: a first-principles analysis

Charis Anastopoulos, Mihalis Lagouvardos, Konstantina Savvidou

We analyze the weak-field limit of General Relativity with matter and its possible quantisations. This analysis aims towards a predictive quantum theory to provide a first-principl…

gr-qc2020★ 1 cited

How black holes store information in high-order correlations

Charis Anastopoulos, Konstantina Savvidou

We explain how Hawking radiation stores significant amount of information in high-order correlations of quantum fields. This information can be retrieved by multi-time measurements…

quant-ph2001★ 4 cited

Quantising the Foliation in History Quantum Field Theory

C. J. Isham, K. N. Savvidou

As a preliminary to discussing the quantisation of the foliation in a history form of general relativity, we show how the discussion in \cite{SavQFT1} of a history version of free,…