Please suggest a open source package for Bethe–Salpeter equation solver can be interfaced with Quantum Espresso?

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Naga Venkateswara Rao Nulakani

Yes, you can use YAMBO

Soumyadeep Ghosh

Dear Naga,

Thanks for the information. Are you use YAMBO for such calculations?

Sujoy Datta

YAMBO is good for this...

Thanks Sujoy Da. Are you currently use YAMBO for such calculations?

I haven't done any quasiparticle calculation yet, but know that YAMBO has good reputation in such calculations. I have used QE for some DFT calculations.

Ok, Thanks Sujoy da.