- #1

Ranku

- 366

- 13

You are using an out of date browser. It may not display this or other websites correctly.

You should upgrade or use an alternative browser.

You should upgrade or use an alternative browser.

- I
- Thread starter Ranku
- Start date

- #1

Ranku

- 366

- 13

- #2

Gaussian97

Homework Helper

- 679

- 405

- #3

PeterDonis

Mentor

- 40,569

- 18,247

Massless

this equation is a kinematic equation, therefore it should not care about the dynamic process that gives mass to the particles

It's a kinematic equation describing massless particles. If a particle gains mass by a dynamic process, it's not massless any more and no longer satisfies a kinematic equation for massless particles. But if that dynamic process hasn't happened yet, and the particle is still massless, it obeys the massless kinematic equation.

even after SSB, if a particle acquires a mass ##m_0## is still not correct to write ##E=\sqrt{p^2+m_0^2}##, but rather you need the renormalized mass

Yes, you would write ##E = \sqrt{p^2 + m_r^2}##, where ##m_r## is the renormalized mass. But this has nothing to do with what kinematic equation you would write

Share:

- Last Post

- Replies
- 6

- Views
- 470

- Last Post

- Replies
- 9

- Views
- 918

- Replies
- 4

- Views
- 458

- Replies
- 5

- Views
- 856

- Last Post

- Replies
- 17

- Views
- 800

- Replies
- 0

- Views
- 358

- Last Post

- Replies
- 18

- Views
- 556

- Replies
- 16

- Views
- 604

- Last Post

- Replies
- 1

- Views
- 291

- Last Post

- Replies
- 1

- Views
- 311