Cosmological particle creation in states of low energy

The recently proposed states of low energy provide a well-motivated class of reference states for the quantized linear scalar field on cosmological Friedmann-Robertson-Walker spacetimes. The low energy property of a state is localized close to some value of the cosmological time coordinate. We present calculations of the relative cosmological particle production between a state of low energy at early time and another such state at later time. In an exponentially expanding Universe, we find that the particle production shows oscillations in the spatial frequency modes. The basis of the method for calculating the relative particle production is completely rigorous. Approximations are only used at the level of numerical calculation.Comment: 24 pages, 7 figure

Towards a Model for Discourse Ethics-based Digital Business Strategy Development

We develop a model that implements generic discourse and business ethics proposals for the concrete purpose of ethical digital business strategy (DBS) development. The model’s objective is to outline how DBS initiatives with the potential to affect the wider society can be developed and justified considering economic, ecological, and social criteria, based on a consensus among the relevant stakeholders. We evaluate the model on the grounds of a two past DBS initiatives that were reported in the media to be controversial due to a lack of stakeholder consensus. With the model, we contribute a pragmatization of the business and discourse ethics literature for the IS discipline that covers the time before actual IS design and development decisions take place. Business and IT executives in practice can draw on the model to guide their DBS processes along ethical lines

Properties of States of Low Energy on Cosmological Spacetimes

The present thesis investigates properties of a class of physical states of the quantised scalar field in FRW spacetimes, namely the states of low energy (SLE’s). These states are characterised by minimising the time-smeared energy density measured by an isotropic observer, where the smearing is performed with respect to a test function f of compact support. Furthermore, they share all spatial symmetries of the spacetime. Since SLE’s are Hadamard states, expectations values of observables like the energy density can be rigorously defined via the so called point-splitting method. In a first step, this procedure will be applied to the explicit calculation of the energy density in SLE’s for the case of de Sitter space with flat spatial sections. In particular, the effect of the choice of the mass m and the test function f will be discussed. The obtained results motivate the question whether SLE’s converge to a distinguished state (namely the Bunch Davies state) when the support of f is shifted to the infinite past. It will be shown that this is indeed the case, even in the more general class of asymptotic de Sitter spacetimes, where an analogon of the Bunch Davies state can be defined. This result enables the interpretation of such distinguished states to be SLE’s in the infinite past, independently of the form of the smearing function f . Finally, the role of SLE’s for the semiclassical backreaction problem will be discussed. We will derive the semiclassical Friedmann equation in a perturbative approach over Minkowski space. This equation allows for a stability analysis of Minkowski space by the investigation of asymptotic properties of solutions. We will also treat this problem using a numerical method

Towards a Model for Discourse Ethics-based Digital Business Strategy Development

© 2016 Oliver Degner &amp; Andreas Drechsler. We develop a decision-making process model that implements generic discourse ethics and business ethics proposals specifically for ethical digital business strategy (DBS) development. The model’s objective is to answer the question how DBS initiatives – with the potential to affect the wider society – can be developed and justified considering economic, ecological and social criteria, based on consensus among the relevant stakeholders. We evaluate the model by examining two past DBS initiatives that were reported in the media as being controversial because of a lack of stakeholder consensus. With the model, we contribute a pragmatization of the business and discourse ethics literature for the IS discipline that covers the time before actual IS design and development decisions take place. Business and IT executives in practice can draw on the model to guide their DBS processes along ethical lines.</jats:p

Towards a Model for Discourse Ethics-based Digital Business Strategy Development

© 2016 Oliver Degner &amp; Andreas Drechsler. We develop a decision-making process model that implements generic discourse ethics and business ethics proposals specifically for ethical digital business strategy (DBS) development. The model’s objective is to answer the question how DBS initiatives – with the potential to affect the wider society – can be developed and justified considering economic, ecological and social criteria, based on consensus among the relevant stakeholders. We evaluate the model by examining two past DBS initiatives that were reported in the media as being controversial because of a lack of stakeholder consensus. With the model, we contribute a pragmatization of the business and discourse ethics literature for the IS discipline that covers the time before actual IS design and development decisions take place. Business and IT executives in practice can draw on the model to guide their DBS processes along ethical lines.</jats:p

Towards a Model for Discourse Ethics-based Digital Business Strategy Development

Abstract: We develop a decision-making process model that implements generic discourse ethics and business ethics proposals specifically for ethical digital business strategy (DBS) development. The model’s objective is to answer the question how DBS initiatives – with the potential to affect the wider society – can be developed and justified considering economic, ecological and social criteria, based on consensus among the relevant stakeholders. We evaluate the model by examining two past DBS initiatives that were reported in the media as being controversial because of a lack of stakeholder consensus. With the model, we contribute a pragmatization of the business and discourse ethics literature for the IS discipline that covers the time before actual IS design and development decisions take place. Business and IT executives in practice can draw on the model to guide their DBS processes along ethical lines