  Vacuum and thermal properties of pseudoscalar and vector charm mesons are
analyzed within a self-consistent many-body approach, employing a chiral
effective field theory that incorporates heavy-quark spin symmetry. Upon
unitarization of the vacuum interaction amplitudes for the scattering of charm
mesons off light mesons in a fully coupled-channel basis, new dynamically
generated states are searched. The imaginary-time formalism is employed to
extend the calculation to finite temperatures up to $T=150$ MeV.
Medium-modified spectral shapes of the $D$, $D^*$, $D_s$ and $D_s^*$ mesons are
provided. The temperature dependence of the masses and decay widths of the
nonstrange $D_0^*$ (2300) and $D_1^*$(2430) mesons, both showing a double-pole
structure in the complex-energy plane, is also reported, as well as that of the
$D_{s0}^*$(2317) and $D_{s1}^*$(2460) resonances and other states not yet
identified experimentally. Being the first calculation incorporating open-charm
vector mesons at finite temperature in a self-consistent fashion, it brings up
the opportunity to discuss the medium effects on the open charm sector under
the perspective of chiral and heavy-quark spin symmetries.
