ERIC ANTHONY LORD

 

ERIC ANTHONY LORD

Publications

Books:

1.    Tensors, Relativity and Cosmology. Tata McGraw-Hill, New Delhi (1976).

2.    E. A. Lord & C B Wilson. The Mathematical Description of Shape and Form. Ellis Horwood (1984).

3.    E A Lord & K P Sinha. (An introduction to astronomy, translated into Hindi by K P Sinha). NCERT, New Delhi (1992).

4.    Poonam S Kohli, Illustrator Eric A Lord. I Can Learn ABC. Macmillan India (1995).

5.    E A Lord, A L Mackay & S Ranganathan. New Geometries for New Materials. Cambridge University Press (2006).

6.     Symmetry and Pattern in Projective Geometry. Springer (2012).

 

Research Papers:

NB: The PDF files are copyrighted material. They are made available here for private study only.

1.    Clifford algebras in general relativity, Proc. Camb. Phil. Soc. 63 (1967) 785-807. [PDF]

2.    The Dirac spinor in six dimensions, Proc. Camb. Phil. Soc. 64 (1968) 765-778.

3.    A model for the weak interactions with intermediate spinless bosons, Nuovo Cimento 68A (1970) 184-201.

4.    General relativity from gauge invariance, Proc. Camb. Phil. Soc. 69 (1971) 423-442. [PDF]

5.    Six dimensional formulation of meson equations, Int. J. Theoret. Phys. 5 (1971) 339-348. [PDF]

6.    Algebraic properties of relativistic wave equations for zero restmass, Int. J. Theoret. Phys. 5 (1972) 349-357. [PDF]

7.    Conformal transformations and cosmology, Nuovo Cimento 11B (1972) 189-200.

8.    Clifford algebras and representations of complex orthogonal groups, J. Math. Sci. Appl. 40 (1972) 509-539. [PDF]

9.    E A Lord & T S Shankara. Analytic continuation of Moyal and operator algebras, Int. J. Theoret. Phys. 7 (1973) 301-308. [PDF]

10.    Kemmer algebras and rotation groups, Int. J. Theoret. Phys. 7 (1973) 153-157. [PDF]

11.    Geometry of the de Sitter universe, Int. J. Theoret. Phys. 9 (1974) 117-127. [PDF]

12.    Red shift formulae for de Sitter type metrics, Int. J. Theoret. Phys. 9 (1974) 129-135.

13.    Gravitational theory in the presence of spinors, Curr. Sci. 42 (1973) 157-159.[PDF]

14.    C Sivaram. E A Lord & K P Sinha. The cosmological constant and scalar gravitons, Progr. Theoret. Phys. 52 (1974) 161-169. [PDF]

15.    E A Lord, C Sivaram & K P Sinha. The role of the cosmological constant and f-gravity in removing cosmological singularities, Curr. Sci. 43 (1974) 199-201.[PDF]

16.    C Sivaram. E A Lord & K P Sinha. f-gravity and the proton-electron mass ratio, Lett. Nuovo Cimento 11 (1974) 142-144.

17.    Creation field theory from dimensional analysis, Pramana 3 (1974) 35-43. [PDF]

18.    Generalised quaternion methods in conformal geometry, Int. J. Theoret. Phys. 13 (1975) 69-102. [PDF]

19.    Conformal invariance and scalar-tensor theories, Pramana 4 (1975) 164-170.[PDF]

20.    On energy-momentum as sources of spin-2 fields, Pramana 5 (1975) 37-38. [PDF]

21.    A theorem on stress-energy tensors, J. Math. Phys. 17 (1976) 37-38. [PDF]

22.    E A Lord & T S Shankara. Rest-frames for tachyons and photons, Foundations of Physics 7 (1977) 459-474

23.    SO(4, 2)-covariant formulation of Bargmann-Wigner equations, Int. J. Theoret. Phys. 16 (1977) 389-399. [PDF]

24.    F W Hehl, G D Kerlick, E A Lord & L L Smalley. Hypermomentum and the violation of the Riemannian constraint in general relativity, Phys. Lett. 70B (1977) 70-73. [PDF]

25.    The metric-affine theory as a gauge theory of the affine group, Phys. Lett. 65A (1975) 1-4. [PDF]

26.    F W Hehl, E A Lord & Y Ne'eman. Hypermomentum in hadron dynamics and in gravitation, Phys. Rev. D17 (1978) 428-433. [PDF]

27.    E A Lord & C B Wilson. The general principles underlying the interaction between buildings and their environments, Building & Environment 15 (1980) 151-

28.    The interaction of the radiation field with material objects, Bldng. Envir. 15 (1980) 167-

29.    E A Lord & C B Wilson. Prediction of the behaviour of physical systems, Edinburgh Architectural Research 8 (1981) 21-

30.    F W Hehl, E A Lord & L L Smalley. Metric-affine variational principles in general relativity II: Relaxation of the Riemannian constraint, Gen. Rel. Grav. (1981) 1037-1056. [PDF]

31.    E A Lord & C B Wilson. Description and prediction in the environmental design of buildings, Bldg. Envir. 17 (1982).

32.    E A Lord & C B Wilson. The prediction of the behaviour of building-environment systems, Bldg. Envir. 18 (1983).

33.    B S Satyaprakash, E A Lord & K P Sinha. Phase transitions and repulsive gravity, Phys. Lett. 105A (1984) 407-9.

34.    E A Lord & P Goswami. Gauging the conformal group, Pramana 25 (1985) 635-40. [PDF]

35.    Geometrical interpretation of Wigner-Inönü contraction, Int. J. Theoret. Phys. 24 (1985) 723-30.[PDF]

36.    E A Lord & P Goswami. Gauge theory of a group of diffeomorphisms I: General principles, J. Math. Phys. 27 (1986) 2415-22. [PDF]

37.    Gauge theory of a group of diffeomorphisms II: The conformal and de Sitter groups, J. Math. Phys. 27 (1986) 3051-54. [PDF]

38.    E A Lord & P Goswami. Gauge theory of a group of diffeomorphisms III: The fiber-bundle description, J. Math. Phys. 29 (1988) 258-67. [PDF]

39.    A unified approach to the gauging of spacetime and internal symmetries, Gen. Rel. Grav. 19 (1987) 983-1002. [PDF]

40.    Poincaré gauge theory from self-coupling, Pramana 29 (1987) 359-68. [PDF]

41.    Gauge theories of gravity, in Proceedings of the National Symposium on Recent Developments in Theoretical Physics, Kottayam 1986, World Scientific (1987) 241-59. [PDF]

42.    Geometrical interpretation of the Mathieu groups and Golay codes, Proc. Indian Acad. Sci. (Mathematical Sciences) 98 (1988) 153-177. [PDF]

43.    E A Lord & K.P. Sinha. Spin and mass content of linearised Poincaré gauge theories, Pramana 30 (1988) 511-519. [PDF]

44.    R. Jha, E A Lord & K.P. Sinha. A singularity-free cosmological model in ECSK theory, Gen. Rel. Grav. 20 (1988) 565-571.

45.    E A Lord, R. Jha & K.P. Sinha. The Brans-Dicke scalar field in Einstein-Cartan theory, Gen. Rel. Grav. 20 (1988) 943-950.

46.    E A Lord, S.K. Sen & V.Ch. Venkaiah. A concise algorithm to solve over-/under-determined equations, Simulation 54 (1990) 239-40.

47.    E A Lord & S.K. Sen. An automatic bisection method to compute complex zeros of a function, in Information Technology: A Key to Progress (S. Bandyopadhyay, ed.), Tata McGraw-Hill, New Delhi (1990) 9-13.

48.    E A Lord , S K Sen, & V Ch. Venkaiah. Solution of linear programming problems by a centring algorithm, in Information Technology in Everyday Life, Tata McGraw-Hill, New Delhi (1991) 433-39.

49.    Quasicrystals and Penrose patterns, Curr. Sci. 61 (1991) 313-319. [PDF]

50.    Fiber bundles in gravitational theory, in Gravitation and Cosmology: Proceedings of the XV IAGRG Conference, North Bengal Univ. 1989, Wiley Eastern (1992) 30-42. [PDF]

51.    E A Lord, S K Sen, & V Ch. Venkaiah. An algorithm to compute a centre of a polytope, Opsearch (Journal of the Operational Research Society of India) (1995).

52.    E A Lord, K P Sinha & P Goswami) The Higgs mechanism for a spinor field and the sigma model. Proc. Nat. Acad. Sci. India 65 (1995) 1-16.

53.    Triply periodic balance surfaces, Colloids and Surfaces A129-130 (1997) 279-295.

54.    K Ramakrishnan, E A Lord & S Ranganathan. An algorithm for generating quasiperiodic patterns & their approximants. Bull. Materials Sci. 23, 119-123. [PDF]

55.    E A Lord, S Ranganathan & U D Kulkarni. Tilings, coverings, clusters & quasicrystals. Curr. Sci. 78 (2000) 64-72. [PDF]

56.    E A Lord, S Ranganathan & U D Kulkarni. Quasicrystals: tiling versus clustering. Phil. Mag. A 81 (2001) 2645-2651. [PDF]

57.    E A Lord, Ranganathan & A Subramaniam, Stacking sequences and symmetry properties of trigonal vacancy-ordered phases. Phil. Mag. A 82 (2002) 255-268. [PDF]

58.    E A Lord & S Ranganathan. Sphere packing, helices and the polytope {3,3,5}. EPJ D 15 (2000) 335-343. [PDF]

59.    E A Lord & S Ranganathan. The Gummelt decagon as a quasi unit cell. Acta Cryst. A57 (2001) 531-539. [PDF]

60.    Helical structures: the geometry of protein helices and nanotubes. Structural Chem. 13 (2002) 305-314. [PDF]

61.    N K Mukhopadhyay & E A Lord. Least path criterion (LPC) for unique indexing in a two-dimensional decagonal quasicrystal. Acta Cryst. A58 (2002) 424-428. [PDF]

62.    Anandh Subramaniam & E A Lord. Pentagonal and trigonal quasilattices and their approximants. Z. Kristallogr. 218 (2003)182-186. [PDF]

63.    E A Lord & A L Mackay. Periodic minimal surfaces with cubic symmetry. Current Science 85 (2003) 346-362. [PDF]

64.    Indexing schemes for quasilattices. Phil. Mag. 83 (2003) 3283-3307. [PDF]

65.    E A Lord & S Ranganathan. The gamma-brass structure and the Boerdijk-Coxeter helix. J. Non-Crystalline Solids 334-335 (2004) 121-125. [PDF]

66.    D B Miracle, E A Lord & S Ranganathan. Candidate atomic cluster configurations in metallic glass structures. Materials Transactions 47 (2006) 1737-1742. [PDF]

67.    S Ranganathan, E A Lord, N K Mukhopadhyay and A Singh. A symmetrical indexing scheme for decagonal quasicrystals analogous to Miller-Bravais indexing of hexagonal crystals. Acta Cryst. A63 (2007) 1-10. [PDF]

68.    E A Lord & S Ranganathan. Truchet tilings and their generalisations. Resonance 11 (2006) 42-50. [PDF]

69.    E A Lord, S Ranganathan & D B Miracle. The supertetrahedron in complex intermetallic structures.

70.    S Ranganathan, A K Srivastava & E A Lord. Coincidence-site lattices as rational approximants to irrational twins. J. Mater. Sci. 41 (2006) 7698-7703. [PDF]

71.    Coincidence sites for rational lattices. Z. Kristallogr. 221 (2006) 705-715. [PDF]

72.    S Ranganathan & E A Lord. Parallelohedra and topological transitions in cellular structures. Phil. Mag. Lett.. 88 (2008) 703-713. [PDF]