I need to take a look at some references about QFT at finite density but I can't find anything, or at least I don't know where to look. I should emphasize that what I need is QFT at zero temperature and finite density so it seems to me QFT in finite temperature books may not be what I need or maybe I'm not understanding what the title's representing.(adsbygoogle = window.adsbygoogle || []).push({});

I'd really appreciate it if anyone clears my confusion here and point me to a good reference.

Thanks

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# A QFT at finite density

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