Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gravitational-wave physics with Cosmic Explorer: limits to low-frequency
  sensitivity   Cosmic Explorer (CE) is a next-generation ground-based gravitational-wave
observatory concept, envisioned to begin operation in the 2030s, and expected
to be capable of observing binary neutron star and black hole mergers back to
the time of the first stars. Cosmic Explorer's sensitive band will extend below
10 Hz, where the design is predominantly limited by geophysical, thermal, and
quantum noises. In this work, thermal, seismic, gravity-gradient, quantum,
residual gas, scattered-light, and servo-control noises are analyzed in order
to motivate facility and vacuum system design requirements, potential test mass
suspensions, Newtonian noise reduction strategies, improved inertial sensors,
and cryogenic control requirements. Our analysis shows that with improved
technologies, Cosmic Explorer can deliver a strain sensitivity better than
$10^{-23}/\mathrm{Hz}^{1/2}$ down to 5 Hz. Our work refines and extends
previous analysis of the Cosmic Explorer concept and outlines the key research
areas needed to make this observatory a reality.

9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con