# Casimir interaction of strained graphene

## TL;DR

This paper calculates the Casimir force between two strained graphene sheets, considering retardation and dispersion effects, and finds that strain has a minimal impact on the force.

## Contribution

It provides a quantum field theoretical calculation of the Casimir interaction in strained graphene, including retardation and dispersion effects.

## Key findings

- Casimir force varies by only a few percent with strain
- Retardation and dispersion are fully incorporated in the model
- Strain has a weak influence on the Casimir interaction

## Abstract

We calculate the Casimir interaction of two freestanding graphene samples under uniaxial strain. Our approach fully takes retardation and dispersion into account and is based on quantum field theoretical expressions for conductivities in terms of the polarization operator. The force shows a rather weak dependence on the realistic values of strain, changing just by a few percent in its maximum as compared to the non-strained case.