Results 61 to 70 of about 134,366 (253)

New comments on six-dimensional orientifold vacua with reduced rank and unitarity constraints

Journal of High Energy Physics
We revisit and extend the construction of six-dimensional orientifolds built upon the T 4/ℤ N orbifolds with a non-vanishing Kalb-Ramond background, both in the presence of N $$ \mathcal{N} $$ = (1, 0) supersymmetry and Brane Supersymmetry Breaking, thus
Giorgio Leone
doaj   +1 more source

Combining dynamic life cycle assessment and net ecosystem exchange through the framework of biobased materials and products‐life cycle assessment (BBM‐LCA): application to polylactic acid

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Biobased products can achieve carbon negativity by storing biogenic carbon in the technosphere through circular loops. Quantifying these benefits requires quantitative assessment tools such as life cycle assessment (LCA). However, the LCA of biobased materials is not straightforward due to the complexity of addressing agroecosystem carbon ...
Ali Ghannadzadeh, Yvonne van der Meer
wiley   +1 more source

Gaugino condensation and the anomalous $U(1)$

, 1996
We study gaugino condensation in presence of an anomalous $U(1)$ gauge group and find that global supersymmetry is dynamically broken. An example of particular interest is provided by effective string models with 4-dimensional Green-Schwarz anomaly ...
Affleck, Atick, Banks, Binétruy, Binétruy, Binétruy, Casas, Casas, Derendinger, Dine, Dine, Dine, Dine, Dine, Dine, Dudas, Dudas, Dudas, E Dudas, Ferrara, Green, Ibáñez, Jain, Kawamura, Krasnikov, Leurer, Leurer, Nilles, Nir, P Binétruy, Seiberg, Taylor   +31 more
core   +2 more sources

Examining the Impact of Role Overload on Knowledge Hiding and Knowledge Manipulation

Canadian Journal of Administrative Sciences / Revue Canadienne des Sciences de l'Administration, EarlyView.
ABSTRACT Role overload was rated as one of the top workplace stressors by the American Psychological Association in 2015. Drawing from the stressor‐emotion model of Counterproductive Work Behaviour, we examine the indirect effect of role overload on knowledge hiding and manipulation, via negative affect.
Jessica R. L. Good, You‐Ta Chuang, Mark Podolsky, Michael Halinski   +3 more
wiley   +1 more source

One-loop renormalization of BPS string masses in pseudo-anomalous heterotic string

Journal of High Energy Physics
Compactification of heterotic string on a Calabi-Yau threefold can lead to a four-dimensional low-energy effective theory which contains a U(1) gauge theory which is pseudo-anomalous, meaning that the fermion content is anomalous, but that the fermion ...
Jeffrey A. Harvey, Tai Wai Hu
doaj   +1 more source

Anomaly Cancellation And Abelian Gauge Symmetries In F-theory

, 2012
We study 4D F-theory compactifications on singular Calabi-Yau fourfolds with fluxes. The resulting N=1 effective theories can admit non-Abelian and U(1) gauge groups as well as charged chiral matter.
Cvetič, Mirjam, Grimm, Thomas W., Klevers, Denis   +2 more
core   +1 more source

Stuckelberg Axions and the Effective Action of Anomalous Abelian Models 2. A SU(3)_C x SU(2)_W x U(1)_Y x U(1)_B model and its signature at the LHC [PDF]

, 2007
We elaborate on an extension of the Standard Model with a gauge structure enlarged by a single anomalous U(1), where the presence of a Wess-Zumino term is motivated by the Green-Schwarz mechanism of string theory.
Abel, Anastasopoulos, Anastasopoulos, Anastasopoulos, Anastasopoulos, Anastasopoulos, Antoniadis, Antoniadis, Atick, Barroso, Bertolini, Binetruy, Binetruy, Binetruy, Blumenhagen, Cafarella, Carlitz, Claudio Corianò, Corianò, Corianò, Corianò, Corianò, De Angelis, De Angelis, Dine, Dupays, Dvali, Faraggi, Feldman, Feldman, Feldman, Froggatt, Georgi, Ghilencea, Ghilencea, Gies, Green, Hagiwara, Hill, Hill, Ibanez, Kiritsis, Kniehl, Kors, Kors, Kors, Kors, Marshall, Massò, Mirizzi, Nikos Irges, Preskill, Quiros, Rosenberg, Simone Morelli   +54 more
core   +2 more sources

Boundary conditions and universal finite‐size scaling for the hierarchical |φ|4$|\varphi |^4$ model in dimensions 4 and higher

Communications on Pure and Applied Mathematics, EarlyView.
Abstract We analyse and clarify the finite‐size scaling of the weakly‐coupled hierarchical n$n$‐component |φ|4$|\varphi |^4$ model for all integers n≥1$n \ge 1$ in all dimensions d≥4$d\ge 4$, for both free and periodic boundary conditions. For d>4$d>4$, we prove that for a volume of size Rd$R^{d}$ with periodic boundary conditions the infinite‐volume ...
Emmanuel Michta, Jiwoon Park, Gordon Slade   +2 more
wiley   +1 more source

Family Symmetry and Neutrino Mixing

, 1998
The observed quark hierarchies suggest a simple family symmetry. Generalized to leptons through grand-unified quantum numbers, it produces a neutrino mixing matrix with order-one \nu_{\mu} - \nu_{\tau} mixing, and order-\lambda^3 \nu_e - \nu_{\mu} and ...
Elwood, John K., Irges, Nikolaos, Ramond, Pierre   +2 more
core   +1 more source

An Orientifold of Type-IIB Theory on $K3$ [PDF]

, 1996
A new orientifold of Type-IIB theory on $K3$ is constructed that has $N=1$ supersymmetry in six dimensions. The orientifold symmetry consists of a $Z_2$ involution of $K3$ combined with orientation-reversal on the worldsheet.
Alvarez-Gaumé, Atish Dabholkar, Bianchi, Bianchi, Callan, Callan, Dai, Dine, Eguchi, Erler, Green, Green, Green, Greene, Horava, Horava, Jaemo Park, Leigh, Nishino, Polchinski, Romans, Sagnotti, Sagnotti, Schwarz, Seiberg, Strominger, Townsend   +26 more
core   +3 more sources