Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Conventional methods fail to measure c_p(omega) of glass-forming liquids   The specific heat is frequency dependent in highly viscous liquids. By
solving the full one-dimensional thermo-viscoelastic problem analytically it is
shown that, because of thermal expansion and the fact that mechanical stresses
relax on the same time scale as the enthalpy relaxes, the plane thermal-wave
method does not measure the isobaric frequency-dependent specific heat
c_p(omega). This method rather measures a "longitudinal" frequency-dependent
specific heat, a quantity defined and detailed here that is in-between
c_p(omega) and c_v(omega). This result means that no wide-frequency
measurements of c_p(omega) on liquids approaching the calorimetric glass
transition exist. We briefly discuss consequences for experiment.

10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc