# Talk:Nambu-Jona-Lasinio model

### Reviewer B

[1] fifth line from the top in the History section: "In condensed matter physics means that" --> "In condensed matter physics it means that"

[2] second line from the bottom in History section: "by Nambu and Jona-Lasinio (1960a,1960b)"--> "by Nambu and Jona-Lasinio (1961a,1961b)"

[3] second line from the bottom in The Nambu-Jona-Lasinio model section: correct identifier of Weinberg (1967) should be #W

### Reviewer A:

The following is my comments to the article:

(1) In the section of The analogy with superconductivity: Although $\psi_{1,2}$ are defined as the eigenstates of the chiral operator $\gamma_5$, the same symbols are also used for the two components of the electron state in the Nambu representation for the superconducting state. It might be bette to use a different notation.

A period is missing at the end of the definition of $\Psi^{\dag}$.

(2) In the section of Nambu-Jona-Lasinio model:

I believe that the sign of RHS in the definition of the generated mass $m$ should be changed to minus, as

$m= -2g[\langle \bar{psi}\psi -\gamma_5\langle \bar{\psi}\gamma_5\psi\rangle]$.



Correspondingly, the sign of the second line should be plus. Please check them.