Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonadiabatic Channels in the Superconducting Pairing of Fullerides   We show the intrinsic inconsistency of the conventional phonon mediated
theory of superconductivity in relation to the observed properties of
Rb$_3$C$_{60}$. The recent, highly accurate measurement of the carbon isotope
coefficient $\alpha_{\rm C}=0.21$, together with the high value of $T_c$ (30 K)
and the very small Fermi energy $E_{\rm F}$ (0.25 eV), unavoidably implies the
opening of nonadiabatic channels in the superconducting pairing. We estimate
these effects and show that they are actually the key elements for the high
value of $T_c$ in these materials compared to the very low values of graphite
intercalation compounds.

7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph