Items where Author is "McDonald, John"

McDonald, John (2024) Higgs Inflation via the Metastable Standard Model Potential, Generalised Renormalisation Frame Prescriptions and Predictions for Primordial Gravitational Waves. Journal of Cosmology and Astroparticle Physics, 2024 (10): 096. ISSN 1475-7516

Lloyd-Stubbs, Kit and McDonald, John (2022) Aspects of Inflation and Cosmology in Non-Minimally Coupled and R² Palatini Gravity. PhD thesis, Lancaster University.

Lloyd-Stubbs, Amy and McDonald, John (2019) KSVZ axion model with quasidegenerate minima : A unified model for dark matter and dark energy. Physical Review D, 99 (2): 023510. ISSN 1550-7998

Kim, Jinsu and McDonald, John (2018) Clockwork Higgs portal model for freeze-in dark matter. Physical Review D, 98 (2). 023553. ISSN 1550-7998

Kim, Jinsu and McDonald, John (2017) Inflaton Condensate Fragmentation: Analytical Conditions and Application to α-Attractor Models. Physical Review D, 95 (12): 123537. ISSN 2470-0010

Kim, Jinsu and McDonald, John (2017) Chaotic initial conditions for nonminimally coupled inflation via a conformal factor with a zero. Physical Review D, 95 (10): 103501. ISSN 2470-0010

Qutub, Saleh and McDonald, John and Bailey, Ian (2017) Dark Matter Production after Inflation and Constraints. PhD thesis, Lancaster University.

McDonald, John (2016) The 750 GeV resonance as non-minimally coupled inflaton : unitarity violation and why the resonance is a real singlet scalar. Physics Letters B, 761. pp. 408-411. ISSN 0370-2693

McDonald, John (2016) Warm dark matter via ultra-violet freeze-in : reheating temperature and non-thermal distribution for fermionic Higgs portal dark matter. Journal of Cosmology and Astroparticle Physics, 2016 (8): 035. ISSN 1475-7516

McDonald, John (2016) Nonminimally coupled inflation with initial conditions from a preinflation anamorphic contracting era. Physical Review D, 94 (4): 043514. ISSN 1550-7998

Kahlhoefer, Felix and McDonald, John (2015) WIMP dark matter and unitarity-conserving inflation via a gauge singlet scalar. Journal of Cosmology and Astroparticle Physics, 2015 (11): 015. ISSN 1475-7516

McDonald, John (2015) Signatures of Planck corrections in a spiralling axion inflation model. Journal of Cosmology and Astroparticle Physics (5): 014. ISSN 1475-7516

McDonald, John (2015) A minimal sub-Planckian axion inflation model with large tensor-to-scalar ratio. Journal of Cosmology and Astroparticle Physics, 2015 (1): 018. ISSN 1475-7516

McDonald, John (2014) Negative running of the spectral index, hemispherical asymmetry and the consistency of Planck with large r. Journal of Cosmology and Astroparticle Physics, 2014 (11): 012. ISSN 1475-7516

McDonald, John (2014) Sub-Planckian two-field inflation consistent with the Lyth bound. Journal of Cosmology and Astroparticle Physics, 2014 (9): 027. ISSN 1475-7516

McDonald, John (2014) Hemispherical power asymmetry from a space-dependent component of the adiabatic power spectrum. Physical Review D, 89 (12): 127303. ISSN 1550-7998

McDonald, John (2013) Hemispherical power asymmetry from scale-dependent modulated reheating. Journal of Cosmology and Astroparticle Physics, 2013 (11): 041. ISSN 1475-7516

Doddato, Francesca and McDonald, John (2013) Dark matter gravitinos and baryons via Q-ball decay in the gauge-mediated MSSM. Journal of Cosmology and Astroparticle Physics, 2013 (7): 004. ISSN 1475-7516

McDonald, John (2013) Isocurvature and curvaton perturbations with red power spectrum and large hemispherical asymmetry. Journal of Cosmology and Astroparticle Physics, 2013 (7): 043. ISSN 1475-7516

McDonald, John (2013) Explaining the dark energy, baryon and dark matter coincidence via domain-dependent random densities. Journal of Cosmology and Astroparticle Physics, 2013 (5): 019. ISSN 1475-7516

McDonald, John (2013) Baryon-to-dark matter ratio from random angular fields. Journal of Cosmology and Astroparticle Physics, 2013 (1): 025. ISSN 1475-7516

Lerner, Rose N. and McDonald, John (2012) Unitarity-violation in generalized Higgs inflation models. Journal of Cosmology and Astroparticle Physics, 2012 (11): 019. ISSN 1475-7516

McDonald, John (2012) Anthropically selected baryon number and isocurvature constraints. Journal of Cosmology and Astroparticle Physics, 2012 (10): 005. ISSN 1475-7516

Doddato, Francesca and McDonald, John (2012) New Q-ball Solutions in Gauge-Mediation, Affleck-Dine Baryogenesis and Gravitino Dark Matter. Journal of Cosmology and Astroparticle Physics, 12 (6): 31. ISSN 1475-7516

McDonald, John (2011) Simultaneous Generation of WIMP Miracle-like Densities of Baryons and Dark Matter. Physical Review D, 84 (10): 103514. ISSN 1550-7998

N. Lerner, Rose and McDonald, John (2011) Distinguishing Higgs inflation and its variants. Physical Review D, 83 (12): 123522. ISSN 1550-7998

Doddato, Francesca and McDonald, John (2011) Affleck-Dine baryogenesis, condensate fragmentation and gravitino dark matter in gauge-mediation with a large messenger mass. Journal of Cosmology and Astroparticle Physics, 2011 (6): 8. ISSN 1475-7516

McDonald, John (2011) Relating the baryon asymmetry to the thermal relic dark matter density. Physical Review D, 83 (8): 083509. ISSN 1550-7998

N. Lerner, Rose and McDonald, John (2010) A Unitarity-Conserving Higgs Inflation Model. Physical Review D, 82 (10): 103525. ISSN 1550-7998

Ferrantelli, Andrea and McDonald, John (2010) Cosmological evolution of scalar fields and gravitino dark matter in gauge mediation at low reheating temperatures. Journal of Cosmology and Astroparticle Physics, 2010 (2): 3. ISSN 1475-7516

Kohri, Kazunori and McDonald, John and Sahu, Narendra (2010) Cosmic Ray Anomalies and Dark Matter Annihilation to Muons via a Higgs Portal Hidden Sector. Physical Review D – Particles and Fields, 81 (2): 023530. ISSN 1550-2368

N. Lerner, Rose and McDonald, John (2010) Higgs inflation and naturalness. Journal of Cosmology and Astroparticle Physics, 2010 (4): 15. ISSN 1475-7516

Lerner, Rose and McDonald, John (2010) S-inflation : a testable, minimal model of inflation and dark matter. PhD thesis, Lancaster University.

N. Lerner, Rose and McDonald, John (2009) Gauge singlet scalar as inflaton and thermal relic dark matter. Physical Review D, 80 (12): 123507. ISSN 1550-7998

McDonald, John (2009) Enhanced Dark Matter Annihilation Rate for Positron and Electron Excesses from Q-ball Decay. Physical review letters, 103 (15): 151301. ISSN 1079-7114

McDonald, John and Sahu, Narendra (2009) keV Warm Dark Matter via the Supersymmetric Higgs Portal. Physical Review D – Particles and Fields, 79 (10): 103523. ISSN 1550-2368

McDonald, John (2009) Cosmological constraints on unparticles as continuous mass particles. Journal of Cosmology and Astroparticle Physics, 2009 (3). p. 19. ISSN 1475-7516

Lerner, Rose N. and McDonald, John (2009) Space-dependent step features : transient breakdown of slow-roll, homogeneity, and isotropy during inflation. Physical Review D, 79 (2): 023511. ISSN 1550-7998

McDonald, John and Seto, Osamu (2008) Supersymmetric inflation and baryogenesis via Extra-Flat directions of the MSSM. Journal of Cosmology and Astroparticle Physics, 2008 (7). p. 15. ISSN 1475-7516

McDonald, John and Sahu, Narendra (2008) Z(2)-Singlino Dark Matter in a Portal-Like Extension of the Minimal Supersymmetric Standard Model. Journal of Cosmology and Astroparticle Physics, 2008 (6). p. 26. ISSN 1475-7516

McDonald, John and Sahu, Narendra and Sarkar, Utpal (2008) Type II See-Saw at Collider, Lepton Asymmetry and Singlet Scalar Dark Matter. Journal of Cosmology and Astroparticle Physics, 2008 (4). p. 37. ISSN 1475-7516

Lin, Chia-Min and McDonald, John (2008) Supergravity and two-field inflation effects in right-handed sneutrino modified D-term inflation. Physical Review D, 77 (6): 063529. ISSN 1550-7998

McDonald, John (2008) Unparticles: Interpretation and Cosmology. UNSPECIFIED. (Unpublished)

McDonald, John (2007) Right-handed sneutrino condensate cold dark matter and the baryon-to-dark matter ratio. Journal of Cosmology and Astroparticle Physics, 2007 (01). 001. ISSN 1475-7516

McDonald, John (2007) RH sneutrino condensate CDM and the baryon-to-dark matter ratio. In: 15th International Conference on Supersymmetry and the Unification of Fundamental Interactions (SUSY07), 2007-07-26 - 2007-08-01.

McDonald, John and Lin, C. M. (2006) Supergravity Modification of D-term Hybrid Inflation: Solving the Cosmic String and Spectral Index Problem via a Right-Handed Sneutrino. Physical Review D, 74 (6). 063510. ISSN 1550-2368

Broadhead, Matt and McDonald, John (2005) Simulations of the end of supersymmetric hybrid inflation and nontopological soliton formation. Physical Review D, 72 (4). 043519. ISSN 1550-7998

McDonald, John (2004) Condition for successful right-handed Majorana Sneutrino curvaton. Physical Review D, 70 (6): 063520. ISSN 1550-7998

McDonald, John (2004) Flat direction dynamics in a non-topological soliton-dominated universe. Journal of Cosmology and Astroparticle Physics, 2004 (8). 002. ISSN 1475-7516

McDonald, John (2004) Supersymmetric curvatons and phase-induced curvaton fluctuations. Physical Review D, 69 (10). p. 103511. ISSN 1550-2368

Broadhead, Matt and McDonald, John (2004) Two-field Q-ball solutions of supersymmetric hybrid inflation. Physical Review D, 69 (6): 063510. 063510. ISSN 1550-7998

McDonald, John (2003) Curvaton Potential Terms, Scale-Dependent Perturbation Spectra and Chaotic Initial Conditions. Journal of Cosmology and Astroparticle Physics, 2003 (12): 005. ISSN 1475-7516

McDonald, John (2003) Growth of inflaton perturbations and the post-inflation era in supersymmetric hybrid inflation models. Physical Review D, 68 (8). 083502. ISSN 1550-7998

McDonald, John (2003) Right-handed sneutrinos as curvatons. Physical Review D, 68 (4): 043505. ISSN 1550-7998

McDonald, John (2003) F-term Hybrid Inflation, the η-problem and Extra Dimensions. Journal of High Energy Physics, 2002 (12): 029. ISSN 1029-8479

McDonald, John (2002) Inflaton condensate fragmentation in hybrid inflation models. Physical Review D, 66 (4). 043525. ISSN 1550-7998

McDonald, John (2002) Thermally-generated Gauge Singlet Scalars as Self-Interacting Dark Matter. Physical review letters, 88 (9). 091304. ISSN 1079-7114

McDonald, John (2001) Non-thermal dark matter, high energy cosmic rays and late-decaying particles from inflationary quantum fluctuations. Physics Letters B, 511 (1). pp. 1-10. ISSN 0370-2693

McDonald, John (2001) Q-ball evolution, B-ball baryogenesis and the fB problem. Journal of High Energy Physics, 2001 (03). 022. ISSN 1029-8479

McDonald, John (2001) Dynamical cosmological constant from a very recent phase transition. Physics Letters B, 498 (3-4). pp. 263-271. ISSN 0370-2693

Enqvist, Kari and McDonald, John (2000) Inflationary Affleck-Dine scalar dynamics and isocurvature perturbations. Physical Review D, 62 (4): 043502. ISSN 1550-7998

Enqvist, Kari and Jokinen, Asko and McDonald, John (2000) Flat direction condensate instabilities in the MSSM. Physics Letters B, 483 (1-3). pp. 191-195. ISSN 0370-2693

McDonald, John (2000) Naturally Large Cosmological Neutrino Asymmetries in the Minimal Supersymmetric Standard Model. Physical review letters, 84 (21). pp. 4798-4801. ISSN 1079-7114

McDonald, John (2000) Reheating temperature and inflaton mass bounds from thermalization after inflation. Physical Review D, 61 (8): 083513. ISSN 0556-2821

Enqvist, K. and McDonald, John (2000) The dynamics of Affleck-Dine condensate collapse. Nuclear Physics B, 570 (1-2). pp. 407-422. ISSN 0550-3213

McDonald, John (1999) Symmetry non-restoration via order 10(-10) B and L asymmetries. Physics Letters B, 463 (2-4). pp. 225-229. ISSN 0370-2693

Enqvist, Kari and McDonald, John (1999) Observable isocurvature fluctuations from the Affleck-Dine condensate. Physical review letters, 83 (13). pp. 2510-2513. ISSN 0031-9007

McDonald, John (1999) Positive order-H-2 mass corrections and Affleck-Dine baryogenesis. Physics Letters B, 456 (2-4). pp. 118-123. ISSN 0370-2693

Enqvist, Kari and McDonald, John (1999) B-ball baryogenesis and the baryon to dark matter ratio. Nuclear Physics B, 538 (1-2). pp. 321-350. ISSN 0550-3213

Enqvist, Kari and McDonald, John (1998) MSSM dark matter constraints and decaying B-balls. Physics Letters B, 440 (1-2). pp. 59-65. ISSN 0370-2693

McDonald, John (1998) Spontaneous discrete symmetry breaking during inflation and the NMSSM domain wall problem. Nuclear Physics B, 530 (1-2). pp. 325-345. ISSN 0550-3213

Enqvist, Kari and McDonald, John (1998) Supersymmetric D-term inflation and B-ball baryogenesis. Physical review letters, 81 (15). pp. 3071-3074. ISSN 0031-9007

Enqvist, Kari and McDonald, John (1998) Q-balls and baryogenesis in the MSSM. Physics Letters B, 425 (3-4). pp. 309-321. ISSN 0370-2693

Enqvist, Kari and McDonald, John (1998) Can cosmic-ray catalysed vacuum decay dominate over tunnelling? Nuclear Physics B, 513 (3). pp. 661-678. ISSN 0550-3213

McDonald, John (1997) Vacuum stability and electroweak baryogenesis in the MSSM with light stops. Physics Letters B, 413 (1-2). pp. 30-34. ISSN 0370-2693

McDonald, John (1997) ucdcdc-based Affleck-Dine baryogenesis. Physical Review D, 55 (7). pp. 4240-4251. ISSN 0556-2821

McDonald, John (1996) CP violation for electroweak baryogenesis from mixing of standard model and heavy vector quarks. Physical Review D, 53 (2). pp. 645-654. ISSN 1550-7998

McDonald, John (1995) A simple estimate of the effect of diffusion on the baryon number generated in spontaneous baryogenesis models (vol 353, pg 267, 1995). Physics Letters B, 364 (4). p. 246. ISSN 0370-2693

McDonald, John (1995) Cosmological domain wall evolution and spontaneous CP violation from a gauge singlet scalar sector. Physics Letters B, 357 (1-2). pp. 19-28. ISSN 0370-2693

McDonald, John (1994) Gauge singlet scalars as cold dark matter. Physical Review D, 50 (6). pp. 3637-3649. ISSN 0556-2821

McDonald, John (1994) Electroweak baryogenesis and dark matter via a gauge singlet scalar. Physics Letters B, 323 (3-4). pp. 339-346. ISSN 0370-2693

McDonald, John (1993) Can a Brans-Dicke scalar account for dark matter in extended inflation models? Physical Review D, 48 (6). pp. 2462-2476. ISSN 0556-2821

McDonald, John (1993) Cosmological limits on deviations from φ2 potentials in oscillating scalar cold dark matter models. Physical Review D, 48 (6). pp. 2573-2580. ISSN 0556-2821

McDonald, John and Olive, Keith A. and Srednicki, Mark (1992) Relic densities of neutralinos. Physics Letters B, 283 (1-2). pp. 80-84. ISSN 0370-2693

McDonald, John (1992) Cosmological consequences of dilatons in the electroweak model. Physics Letters B, 274 (1). pp. 72-78. ISSN 0370-2693

McDonald, John (1991) Chaotic inflation driven by a minimally coupled scalar field in Brans-Dicke models. Physical Review D, 44 (8). pp. 2314-2324. ISSN 0556-2821

McDonald, John (1991) Dark matter from an oscillating Brans-Dicke scalar in the extended inflation model. Physical Review D, 44 (8). pp. 2325-2334. ISSN 0556-2821

McDonald, John (1991) Weakly interacting massive particle densities in decaying-particle-dominated cosmology. Physical Review D, 43 (4). pp. 1063-1068. ISSN 0556-2821

McDonald, John (1989) Is neutralino dark matter compatible with flipped SU(5) models? Physics Letters B, 225 (1-2). pp. 133-139. ISSN 0370-2693

McDonald, John (1989) Cosmological higgsino densities in SUSY models with intermediate mass scales. Physics Letters B, 217 (1-2). pp. 107-112. ISSN 0370-2693

McDonald, John (1987) On E8×E8 superstring based models with SU(3)c×SU(2)L×SU(2)N×U(1)y×U(1)y′ gauge symmetry. Physics Letters B, 194 (3). pp. 375-384. ISSN 0370-2693

McDonald, John and Vayonakis, C. E. (1985) Proton decay via d=5 gluino dressed graphs with flavour diagonal gluino couplings in supergravity models. Physics Letters B, 163 (1-4). pp. 148-154. ISSN 0370-2693

McDonald, John and Vayonakis, C. E. (1985) Flat supergravity potentials with non-zero potential energy due to D-terms. Physics Letters B, 150 (5). pp. 357-359. ISSN 0370-2693

McDonald, John and Vayonakis, C. E. (1984) Effects of non-minimal gauge kinetic terms in supergravity models. Physics Letters B, 144 (3-4). pp. 199-202. ISSN 0370-2693