- #1
mavipranav
- 25
- 0
Hi
Can somebody explain what is a "gapless excitation"? If it is an excitation, why does it require no energy (gapless) to excite the system?
Thanks,
Mavi
Can somebody explain what is a "gapless excitation"? If it is an excitation, why does it require no energy (gapless) to excite the system?
Thanks,
Mavi