Which sub-atomic particle acts like a time reversed current?

What-A-Mess

Both are theoretical so the answer is supposition. Dec 28 06, 4:15 AM

hohohaha

Tackeyon (the spelling is probably wrong, but it's at least spelled the way it's pronounced) Dec 28 06, 2:04 PM

Baloo55th

Tachyon... They either travel forward in time faster than the speed of light, or backwards in time slower than the speed of light. Either way there are problems...... Dec 28 06, 4:23 PM

tragic_flawed

Answer was Positron- in the book Warped Passages- by Lisa Randall- the positron is the reverse of the electron... Dec 28 06, 6:37 PM

hohohaha

The Positron would imply a CHARGE reversed current not a TIME reversed current. Dec 29 06, 7:30 AM

Baloo55th

I'm slightly puzzled as to how a particle acts as a current. They can be regarded as waves or particles more or less at the same time, but not as currents. The positron is used in machines in many hospitals - Positron Emission Tomography. Here the gamma rays formed when a positron and an electron meet and anihilate are used to create an image of the body - like in CAT scanning. Richard Feynman came up with the proposition that an electron moving backwards in time (downward arrow on a Feynman Diagram) was the same as a positron moving forwards in time (upwards arrow). What this apparently means is that if you reverse the time sign in the equations, you actually change an electron into a positron. That's sort of what's explained rather better here http://members.tripod.com/mwolff/body_feyn.html As with a lot of stuff at this level, it gets hard to sort out what is actually happening in real life, and what can happen in the world of equations if you nudge things a bit. Dec 29 06, 9:49 AM