Quick Question about anti-particles.

  • Thread starter Thread starter mr-tom
  • Start date Start date
mr-tom
Messages
18
Reaction score
0
Is it true that they have negative kinetic energy; wouldn't this mean that they have imaginary velocities? :confused:

I'm sure I've read this somewhere but I just need to confirm if it's true or not.
 
Physics news on Phys.org
No, it's not true. They have positive energy and mass and real velocities.
 
Oh...damn
 
They have opposite charge though
 
Thread 'Why is there such a difference between the total cross-section data? (simulation vs. experiment)'

Thread 'Why is there such a difference between the total cross-section data? (simulation vs. experiment)'

Well, I'm simulating a neutron-proton scattering phase shift. The equation that I solve numerically is the Phase function method and is $$ \frac{d}{dr}[\delta_{i+1}] = \frac{2\mu}{\hbar^2}\frac{V(r)}{k^2}\sin(kr + \delta_i)$$ ##\delta_i## is the phase shift for triplet and singlet state, ##\mu## is the reduced mass for neutron-proton, ##k=\sqrt{2\mu E_{cm}/\hbar^2}## is the wave number and ##V(r)## is the potential of interaction like Yukawa, Wood-Saxon, Square well potential, etc. I first...
View full post »

Thread 'Toponium Discovered'

Toponium is a hadron which is the bound state of a valance top quark and a valance antitop quark. Oversimplified presentations often state that top quarks don't form hadrons, because they decay to bottom quarks extremely rapidly after they are created, leaving no time to form a hadron. And, the vast majority of the time, this is true. But, the lifetime of a top quark is only an average lifetime. Sometimes it decays faster and sometimes it decays slower. In the highly improbable case that...
View full post »

Thread 'Dirac-Delta from Normalization of Continuous Eigenfunctions'

I'm following this paper by Kitaev on SL(2,R) representations and I'm having a problem in the normalization of the continuous eigenfunctions (eqs. (67)-(70)), which satisfy \langle f_s | f_{s'} \rangle = \int_{0}^{1} \frac{2}{(1-u)^2} f_s(u)^* f_{s'}(u) \, du. \tag{67} The singular contribution of the integral arises at the endpoint u=1 of the integral, and in the limit u \to 1, the function f_s(u) takes on the form f_s(u) \approx a_s (1-u)^{1/2 + i s} + a_s^* (1-u)^{1/2 - i s}. \tag{70}...
View full post »

Similar threads

B What are the differences between relict and relic?
Replies
28
Views
3K
B Anti-matter discovery before 1932?
Replies
1
Views
1K
B Are Δ- and Δ+ Antiparticles of Each Other?
Replies
2
Views
12K
I How does the strong force give nucleons most of their mass?
Replies
17
Views
3K
I A test for a superluminal neutrino?
Replies
4
Views
2K
B The nature of anti-particles and anti-matter (a dilettante asks)
Replies
8
Views
1K
B I wonder about a particle's energy when mass is obtained or lost
Replies
2
Views
3K
I Separation energy of nucleons and Coulomb barrier
Replies
1
Views
2K
I Down Quark: Composed of Up Quark and Electron?
Replies
12
Views
2K
I Particle exchange explaining attractive forces
Replies
12
Views
3K

Hot Threads

Recent Insights

Back
Top