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Department of Applied Mathematics and Theoretical Physics

Career

  • 2020 Oct. - present           Research Associate / Rubicon Fellow    University of Cambridge
  • 2016 Sept. - 2020 Sept.   PhD Candidate / de Sitter Fellow          Leiden University
  • 2013 Sept. - 2016 Jun.      Master                                              University of Science and Technology of China

Research

    My research focuses on primordial cosmology. Currently I am exploring new physics effects in the earliest stage of the Universe, by looking into their imprints in cosmological observables. In particular, I am interested in applying the boostrap approach to study the theoretical aspects of cosmological correlators, and the phenomenology of primordial non-Gaussianity.

    Find more on my personal website.

Publications

One small step for an inflaton, one giant leap for inflation: A novel non-Gaussian tail and primordial black holes
YF Cai, XH Ma, M Sasaki, DG Wang, Z Zhou
– Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
(2022)
834,
137461
Boostless cosmological collider bootstrap
GL Pimentel, DG Wang
– Journal of High Energy Physics
(2022)
2022,
177
Boostless Cosmological Collider Bootstrap
GL Pimentel, D-G Wang
– JHEP
(2022)
10,
177
One Small Step for an Inflaton, One Giant Leap for Inflation: a novel non-Gaussian tail and primordial black holes
Y-F Cai, X-H Ma, M Sasaki, D-G Wang, Z Zhou
– November
(2021)
10,
2022
Origin of ultra-light fields during inflation and their suppressed non-Gaussianity
A Achúcarro, GA Palma, DG Wang, Y Welling
– Journal of Cosmology and Astroparticle Physics
(2020)
2020,
018
Shift-symmetric orbital inflation: Single field or multifield?
A Achúcarro, EJ Copeland, O Iarygina, GA Palma, DG Wang, Y Welling
– Physical Review D
(2020)
102,
021302
Multi-field inflation and preheating in asymmetric $α$-attractors
O Iarygina, EI Sfakianakis, D-G Wang, A Achúcarro
(2020)
On the inflationary massive field with a curved field manifold
DG Wang
– Journal of Cosmology and Astroparticle Physics
(2020)
2020,
046
When primordial black holes from sound speed resonance meet a stochastic background of gravitational waves
YF Cai, C Chen, X Tong, DG Wang, SF Yan
– Physical Review D
(2019)
100,
043518
Universality and scaling in multi-field $α$-attractor preheating
O Iarygina, EI Sfakianakis, DG Wang, A Achúcarro
– Journal of Cosmology and Astroparticle Physics
(2019)
2019,
027
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Research Group

Relativity and Gravitation