# What is the latex code of this E/Epsilon variation? (Detexify didn't work) [duplicate]

I've found it in the book "Introduction to Quantum Optics" written by Grynberg, et-al... and I'd like to use it in my discussion on this title.

I've already try on Detexify but failed.

• Looks like \mathcal{E}. – Johannes_B Mar 18 '18 at 2:02
• Or maybe \mathscr{E} – ShreevatsaR Mar 18 '18 at 2:06
• It's probably just a glyph from some font; you can try using the same font, or just draw your own. – ShreevatsaR Mar 18 '18 at 2:08
• You can load \usepackage{mathrsfs,rsfso} and then try$\mathcal{E}$ $\mathscr{E}$ in the document. None of them is a 100% match. – user121799 Mar 18 '18 at 2:09
• Alternative duplicate How do I find out what fonts are used in a document/picture? – Henri Menke Mar 18 '18 at 3:37