Quantum virial expansion approach to thermodynamics of 4He adsorbates in carbon nanotube materials:: Interacting Bose gas in one dimension -: art. no. 165426

I demonstrate that He-4 adsorbates in carbon nanotube materials can be treated as one-dimensional interacting gas of spinless bosons for temperatures below 8 K and for coverages such that all the adsorbates are in the groove positions of the carbon nanotube bundles. The effects of adsorbate-adsorbate interactions are studied within the scheme of the virial expansion approach. The theoretical predictions for the specific heat of the interacting adsorbed gas are given.