# Effective dynamics of a conditioned generalized linear Glauber model

## TL;DR

This paper investigates the effective dynamics of a generalized linear Glauber model conditioned on a specific current, revealing constraints on transition rates and deriving constants of motion for the model.

## Contribution

It introduces a generalized linear Glauber model conditioned on a current and analyzes its effective dynamics, including constraints on transition rates and constants of motion.

## Key findings

- Effective process contains local interactions with rescaled transition rates.
- Constraints on microscopic transition rates for local interactions.
- Constants of motion are identified for the generalized model.

## Abstract

In order to study the stochastic Markov processes conditioned on a specific value of a time-integrated observable, the concept of ensembles of trajectories has been recently used extensively. In this paper, we consider a generic reaction-diffusion process consisting of classical particles with nearest-neighbor interactions on a one-dimensional lattice with periodic boundary conditions. By introducing a time-integrated current as a physical observable, we have found certain constraints on the microscopic transition rates of the process under which the effective process contains local interactions; however, with rescaled transition rates comparing to the original process. A generalization of the linear Glauber model is then introduced and studied in detail as an example. Associated effective dynamics of this model is investigated and constants of motion are obtained.