Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tidal Deformability of Quark Stars with Repulsive Interactions   In an early work, we applied a QCD-based equation of state to the study of
the stellar structure of self-bound strange stars, obtaining sequences with
maximum masses larger than two solar masses and radii ranging from 8 to 12 Km.
In this work, we update the previous calculations and compare them with the
most recent data, including the very recent determination of the mass and
radius of the massive pulsar PSR J0740+6620 performed by the NICER and
XMM-Newton Collaborations. Our equation of state is similar to the MIT bag
model one, but it includes repulsive interactions, which turn out to be
essential to reproduce the accumulated experimental information. We find that
our EOS is still compatible with all astrophysical observations but the
parameter window is now narrower.

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The categories of this paper are: cs
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The categories of this paper are: stat
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
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The categories of this paper are: math-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: q-fin
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-th
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The categories of this paper are: dg-ga
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The categories of this paper are: math
27
The categories of this paper are: comp-gas
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The categories of this paper are: eess
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The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci