Comment on "Spin-gradient-driven light amplification in a quantum plasma".
Chennai Mathematical Institute, SIPCOT IT Park, Siruseri 603103, India.
G S
GS
Krishnaswami
National Centre for Radio Astrophysics, TIFR, Pune 411007, India.
R
R
Nityananda
Institute for Plasma Research, Bhat, Gandhinagar 382428, India.
A
A
Sen
Astrophysics Group, University of Bristol, Bristol BS8 1TL, United Kingdom.
A
A
Thyagaraja