# Q. What calculations can be performed with Quantum Espresso?

**URL:** <https://community.materialssquare.com/t/q-what-calculations-can-be-performed-with-quantum-espresso/374>\
**Category:** MatSQ FAQ\
**Tags:** faq, quantum-espresso\
**Created:** [June 7, 2024, 6:39am UTC](https://community.materialssquare.com/t/q-what-calculations-can-be-performed-with-quantum-espresso/374 "2024-06-07T06:39:09Z")\
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**Author:** ![jihee.y](https://avatars.discourse-cdn.com/v4/letter/j/838e76/32.png) [@jihee.y](https://community.materialssquare.com/u/jihee.y)\
**Post date:** [June 7, 2024, 6:39am UTC](https://community.materialssquare.com/t/q-what-calculations-can-be-performed-with-quantum-espresso/374/1 "2024-06-07T06:39:09Z")

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A. With Quantum Espresso, you can perform the following calculations.

- Energy Calculations: Compute ground state energy, total energy, and free energy of materials.
- Structural Optimization: Optimize atomic positions to find the most stable structure of a material.
- Electronic Structure Calculations: Analyze the electronic structure of materials by calculating band structures and density of states (DOS).
- Mechanical Properties: Calculate bulk modulus, elastic constants, and stress-strain curves to study the mechanical behavior of materials.
- Magnetic Properties Analysis: Calculate magnetic moments and spin states of magnetic materials.
- Optical Properties: Compute dielectric functions, absorption coefficients, and refractive indices to study the optical properties of materials.
- Vibrational Properties: Analyze vibrational modes and phonon spectra, and calculate properties such as phonon density of states.
- Ab-initio Molecular Dynamics: Perform molecular dynamics simulations to study atomic movements and structural changes over time.