Welcome to my homepage!

        
                                     
            Professor    

        School of Mathematical Sciences
        Beijing Normal University
        Beijng 100875, China

        Office:  1302 Houzhulou
        Email:  chen.huajie@bnu.edu.cn

            department website


        Research Interests

         Eigenvalue problems
         Electronic structure calculations
         Multiscale methods


        CV

        Sep. 2016 - Present:      Professor at Beijing Normal University
        Oct. 2014 - Aug. 2016:  Postdoc at University of Warwick  
                                               (with Prof. Christoph Ortner)

        Oct. 2012 - Sep. 2014:   Postdoc at Technische Universitat Munchen  
                                               (with Prof. Gero Friesecke)

        Nov. 2010 - Sep. 2012: ‌ Postdoc at Technische Universitat Berlin  
                                               (with Prof. Reinhold Schneider)

        Sep. 2005 - Jul. 2010:    Ph.D at Institute of Computational Mathematics and Scientific/Engineering Computing,
                                               Academy of Mathematics and Systems Science,
                                               Chinese Academy of Sciences   
                                               (Adviser: Prof. Aihui Zhou)

        Sep. 2001 - Jul. 2005:    B.S. at School of Mathematical Sciences, Beijing Normal University


         Publications

            My Google citations profile
    1.   Huajie Chen, Christoph Ortner, and Yangshuai Wang,
          QM/MM methods for crystalline defects. Part 3: Machine-learned interatomic potentials,
          arXiv:2106.14559 (2021) [link]


    2.   Jack Thomas, Huajie Chen, and Christoph Ortner,
          Rigorous body-order approximations of an electronic structure potential energy landscape,
          arXiv:2106.12572 (2021) [link]


    3.   Ting Wang, Huajie Chen, Aihui Zhou, and Yuzhi Zhou,
          Layer-splitting methods for time-dependent Schrodinger equations of incommensurate systems,
          arXiv:2103.14897 (2021) [link]


    4.   Beilei Liu, Huajie Chen, Genevieve Dusson, Jun Fang, and Xingyu Gao,
          An adaptive planewave method for electronic structure calculations,
          arXiv:2012.14806 (2020) [link]


    5.   Yangshuai Wang, Huajie Chen, Mingjie Liao, Christoph Ortner, Hao Wang, and Lei Zhang,
          A posteriori error estimates for adaptive QM/MM coupling methods,
          SIAM J. Sci. Comput., 43 (2021), pp. A2785-A2808 [link]


    6.   Yichen Guo, Lueling Jia, Huajie Chen, Huiyuan Li, and Zhiming Zhang,
          A mortar spectral element method for full-potential electronic structure calculations,
          Commun. Comput. Phys., 29 (2021), pp. 1541-1569 [link]


    7.   Huajie Chen, Aihui Zhou, and Yuzhi Zhou,
          A plane wave study on the localized-extended transitions in the one-dimensional incommensurate systems,
          Comput. Mat. Sci., 188 (2021), pp. 110242 1-9 [link]


    8.   Christoph Ortner, Jack Thomas, and Huajie Chen,
          Locality of interatomic forces in tight binding models for insulators,
          ESAIM: M2AN, 54 (2020), pp. 2295-2318 [link]


    9.   Huajie Chen, Mingjie Liao, Hao Wang, Yangshuai Wang, and Lei Zhang,
          Adaptive QM/MM coupling for crystalline defects,
          Comput. Methods Appl. Mech. Engrg., 354 (2019), pp. 351-368 [link]


    10.   Xiaoxu Li and Huajie Chen,
          A discontinuous Galerkin scheme for full-potential electronic structure calculations,
          J. Comput. Phys., 385 (2019), pp. 33-50 [link]


    11.   Yuzhi Zhou, Huajie Chen, and Aihui Zhou,
          Plane wave methods for quantum eigenvalue problems of incommensurate systems,
          J. Comput. Phys., 384 (2019), pp. 99-113 [link]


    12.   Huajie Chen, Faizan Q. Nazar, and Christoph Ortner,
          Geometry equilibration of crystalline defects in quantum and atomistic descriptions,
          M3AS, 29 (2019), pp. 419-492 [link]


    13.   Huajie Chen, Jianfeng Lu, and Christoph Ortner,
          Thermodynamic limit of crystal defects with finite temperature tight binding,
          Arch. Rational Mech. Anal., 230 (2018), pp. 701-733 [link]


    14.   Huajie Chen and Christoph Ortner,
          QM/MM methods for crystalline defects. Part 2: Consistent energy and force-mixing,
          Multiscale Model. Simul., 15 (2017), pp. 184-214 [link]


    15.   Huajie Chen and Christoph Ortner,
          QM/MM methods for crystalline defects. Part 1: Locality of the tight binding model,
          Multiscale Model. Simul., 14 (2016), pp. 232-264 [link]


    16.   Huajie Chen and Gero Friesecke,
          Pair densities in density functional theory,
          Multiscale Model. Simul., 13 (2015), pp. 1259-1289 [link]


    17.   Huajie Chen and Reinhold Schneider,
          Error estimates of some numerical atomic orbitals in molecular simulations,
          Commun. Comput. Phys., 18 (2015), pp. 125-146 [link]


    18.   Huajie Chen and Reinhold Schneider,
          Numerical analysis of augmented plane waves methods for full-potential electronic structure calculations,
          ESIAM: M2AN, 49 (2015), pp. 755-785 [link]


    19.   Huajie Chen, Xiaoying Dai, Xingao Gong, Lianhua He, and Aihui Zhou,
          Adaptive finite element approximations for Kohn-Sham models,
          Multiscale Model. Simul., 12 (2014), pp. 1828-1869 [link]


    20.   Huajie Chen, Gero Friesecke, and Christian B. Mendl,
          Numerical methods for a Kohn-Sham density functional model based on optimal transport,
          J. Chem. Theory Comput., 10 (2014), pp. 4360-4368 [link]


    21.   Markus Bachmayr, Huajie Chen, and Reinhold Schneider,
          Error estimates for Hermite and even-tempered Gaussian approximations in quantum chemistry,
          Numer. Math., 128 (2014), pp. 137-165 [link]


    22.   Huajie Chen, Xingao Gong, Lianhua He, Zhang Yang, and Aihui Zhou,
          Numerical analysis of finite dimensional approximations of Kohn-Sham equations,
          Adv. Comput. Math., 38 (2013), pp. 225-256 [link]


    23.   Huajie Chen and Aihui Zhou,
          Finite element approximations in orbital-free density functional theory,
          In: Recent Progress in Orbital-Free Density Functional Theory, edited by T. A. Wesolowski and Y. A. Wang,
          World Scientific, Singapore (2013), Chapter 8, pp. 251-272 [link]


    24.   Huajie Chen, Xingao Gong, Lianhua He, and Aihui Zhou,
          Adaptive finite element approximations for a class of nonlinear eigenvalue problems in quantum physics,
          Adv. Appl. Math. Mech., 3 (2011), pp. 493-518 [link]


    25.   Huajie Chen, Lianhua He, and Aihui Zhou,
          Finite element approximations of nonlinear eigenvalue problems in quantum physics,
          Comput. Methods Appl. Mech. Engrg., 200 (2011), pp. 1846-1865 [link]


    26.   Huajie Chen, Fang Liu, Nils Reich, Christoph Winter, and Aihui Zhou,
          Two-scale finite element discretizations for integro-differential equations,
          J. Integral Equations Appl., 23 (2011), pp. 1-31 [link]


    27.   Huajie Chen, Xingao Gong, and Aihui Zhou,
          Numerical approximations of a nonlinear eigenvalue problem and applications to a density functional model,
          Math. Meth. Appl. Sci., 33 (2010), pp. 1723-1742 [link]


    28.   Huajie Chen, Fang Liu, and Aihui Zhou,
          A two-scale higher-order finite element discretization for Schrodinger equation,
          J. Comput. Math., 27 (2009), pp. 315-337 [link]


    29.   Huajie Chen and Aihui Zhou,
          Orbital-free density functional theory for molecular structure calculations,
          Numer. Math. Theor. Meth. Appl., 1 (2008), pp. 1-28 [link]