一直从事于引力理论、暗能量宇宙学的研究工作，在统一暗物质暗能量模型、暗能量模型、性质与修改引力模型的数据拟合和理论研究、宇宙运动学、暗物质与暗能量相互作用以及暗物质的状态方程等领域发表SCI论文100余篇，主要发表在PRD、JCAP、PLB、EPJC、APJ等国际物理学杂志，总引用2600余次，论文列表详见：https://inspirehep.net/authors/1029134?ui-citation-summary=true

部分列表如下：

(1) Lixin Xu*, Constraints onf(R) gravity through the redshift space distortion, Physical Review D, 2015, 91(6)

(2) Lixin Xu*, Gravitational waves: A test for modified gravity, Physical Review D, 2015, 91(10)

(3) Lixin Xu*, A New Unified Dark Fluid Model and Its Cosmic Constraint, International Journal of Theoretical Physics, 2014, 53(11): 4025-4034

(4) Lixin Xu*, Confronting DGP braneworld gravity with cosmico observations after Planck data, Journal of Cosmology and Astroparticle Physics, 2014, (2)

(5) Lixin Xu*, Yadong Chang, Equation of state of dark matter after Planck data, Physical Review D, 2013, 88(12)

(6) Lixin Xu*, Growth index after the Planck results, Physical Review D, 2013, 88(8)

(7) Lixin Xu*, Spherical collapse of a unified dark fluid with constant adiabatic sound speed, European Physical Journal C, 2013, 73(3)

(8) Lixin Xu*, Constraints on the holographic dark energy model from type Ia supernovae, WMAP7, baryon acoustic oscillation, and redshift-space distortion, Physical Review D, 2013, 87(4)

(9) Lixin Xu*, Unified dark fluid with constant adiabatic sound speed: Including entropic perturbations, Physical Review D, 2013, 87(4)

(10) Lixin Xu*, Revisiting Cardassian model and cosmic constraint, European Physical Journal C, 2012, 72(8)

(11) Lixin Xu*, Constraints on the holographic dark energy model via type Ia supernovae, baryon acoustic oscillation, and WMAP7, Physical Review D, 2012, 85(12)

(12) Lixin Xu*, Cosmological model-independent Gamma-ray bursts calibration and its cosmological constraint to dark energy, Journal of Cosmology and Astroparticle Physics, 2012, (4)

(13) Lixin Xu*, Yuting Wang, Hyerim Noh, Unified dark fluid with constant adiabatic sound speed and cosmic constraints, Physical Review D, 2012, 85(4)

(14) Lixin Xu*, Yuting Wang, Tong, Minglei Noh,  Hyerim, CMB temperature and matter power spectrum in a decay vacuum dark energy model, Physical Review D, 2011, 84(12)

(15) Lixin Xu*, Yuting Wang, Yuanxing Gui, Probing the Ricci dark energy model with perturbations by using WMAP seven-year cosmic microwave background measurements, baryon acoustic oscillations, and type Ia supernovae, Physical Review D, 2011, 84(6)

(16) Lixin Xu*, Yuting Wang, Cosmography: Supernovae Union2, Baryon Acoustic Oscillation, observational Hubble data and Gamma ray bursts, Physics Letters B, 2011, 702(2-3): 114-120

(17) Lixin Xu*, Yuting Wang, Testing the consistency of Gamma Ray Burst data-set and Supernovae Union2, Journal of Cosmology and Astroparticle Physics, 2010, 11(11)

(18) Lixin Xu*, Yuting Wang, Cosmic constraint to DGP brane model: Geometrical and dynamical perspectives, Physical Review D, 2010, 82(4): 043503

(19) Lixin Xu*, Jianbo Lu, Wenbo Li, Time variable cosmological constants from the age of universe, Physics Letters B, 2010, 690(4):333-336

 (20) Lixin Xu*, Yuting Wang, Observational constraints to Ricci dark energy model by using: SN, BAO, OHD, fgas data sets, Journal of Cosmology and Astroparticle Physics, 2010, (6): 1-19

(21) Lixin Xu*, Jianbo Lu, Cosmological constraints on generalized Chaplygin gas model: Markov Chain Monte Carlo approach, Journal of Cosmology and Astroparticle Physics, 2010, (3): 1-14

(22) Lixin Xu*, Jianbo Lu, Wenbo Li, Generalized holographic and Ricci dark energy models, European Physical Journal C, 2009, 64(1): 89-95

(23) Lixin Xu*, Holographic dark energy model with Hubble horizon as an IR cut-off, Journal of Cosmology and Astroparticle Physics, 2009, (9): 1-5

 (24) Lixin Xu*, Wenbo Li, Jianbo Lu, Constraints on kinematic model from recent cosmic observations: SN Ia, BAO and observational Hubble data, Journal of Cosmology and Astroparticle Physics, 2009, (7): 1-13

 (25) Lixin Xu*, Wenbo Li, Jianbo Lu, Holographic dark energy in Brans-Dicke theory, European Physical Journal C, 2009, 60(1): 135-140