Hello, everyone, I want to ask, how to type this formula in latex? Thank you So much! A Formula in quantum mechanics

  • 2
    Why is biblatex tagged?
    – frabjous
    Oct 10, 2022 at 2:06

1 Answer 1


The font usually used for math script does not have a bold variant, but you can emulate something like bold by using the \pmb command from the amsbsy package, as suggested in this answer to a similar question.

(There are other solutions in that thread you might also consider.)


$\pmb{\mathscr{E}} = \mathscr{E}\negthinspace\mathbf{e}_{x}$


script bold E

  • Thanks a lot, this solved my problem exactly and was very helpful!
    – Sheng Liu
    Oct 10, 2022 at 2:39

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .