Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measuring the spectral running from cosmic microwave background and
  primordial black holes   We constrain the spectral running by combining cosmic microwave background
(CMB) data, baryon acoustic oscillation (BAO) data and the constraint from
primordial black holes (PBHs). We find that the constraint from PBHs has a
significant impact on the running of running of scalar spectral index, and a
power-law scalar power spectrum without running is consistent with
observational data once the constraint from PBHs is taken into account. In
addition, from the constraints on the slow-roll parameters, the derived tensor
spectral index in the single-field slow-roll inflation model is quite small,
namely $|n_t|\lesssim 9.3\times 10^{-3}$ which will be very difficult to be
measured by CMB data only in the future, and the absolute value of derived
running of tensor spectral index is not larger than $2.1\times 10^{-4}$ at 95%
confidence level.

13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph