scholarly journals Unconstrained canonical action for, and positive energy of, massive spin 2

2015 ◽  
Vol 93 (4) ◽  
pp. 395-397 ◽  
Author(s):  
S. Deser
Keyword(s):  

Filling a much-needed gap, we exhibit the D = 4 Fierz–Pauli massive s = 2 action, and its — manifestly positive — energy, in terms of its 2s + 1 = 5 unconstrained helicity (2, 1, 0) excitations, after reducing and diagonalizing the troublesome helicity-zero sector.

Author(s):  
Dinesh Kumar ◽  
Jyotirmaya Mahapatra

Contrary to the Indian philosophy of “Vasudhaiv Kutumbkam”, western design of management is based upon the Darwin's principle of the survival of the fittest which promoted the philosophy of 'dog eats dog'. Bulkiness of the bottom line of the balance sheet became the yardstick of the success of an organization and ethics, values and lifelong emotional bonding with people are pushed to the peripheral level where customers became 'consumer' and workers a 'hirable and replaceable commodity' and management professionals as 'tools to improvise the bottom line' without realizing that profit is not the sole motto as the purpose of organization is to create values to the society and profit is just a byproduct. Ethics and values are different from rules/regulations because it provides criteria for evaluating action based upon certain desirable norms but has no legal binding. The management is expected to follow the highest ethical standards as management is not just accountable to shareholders but also responsible towards stake holders and responsibility of management professionals from public work cannot be veiled behind the professionalism. Moreover, the great organization cannot be created without values and ethics. Only those organizations can survive till eternity that follow highest standard of ethics, moral values and create values for the society. It is difficult to accept that an organization follows highest standard of ethics, values and emotions in its internal management but can afford to remain low in ethical standards with customers. Organizations have realized the importance of ethics in marketing for the benefits in long term. Adoptions of ethical practices in marketing create positive energy in the organization and generate interest of the customer in products/ services, develop customer confidence in organization's brand and leads to loyalty. A loyal and satisfied customer and organization's brand value gives pride among employees who develops a sense of satisfaction and loyalty towards the organization which can be understood by the following flow chart: Ethical marketing behavior Satisfied customer and Brand loyalty Strong Citizen Brand Spiritually pure Business and Profit Positive energy in the organization Spiritually connected employees develops pride in organization Daivisampat employees (faithful and honest) Works hard to continue to have satisfied and loyal customers Organization able to sustain leadership


Solar Energy ◽  
2020 ◽  
Vol 212 ◽  
pp. 258-274
Author(s):  
C. Zomer ◽  
I. Custódio ◽  
S. Goulart ◽  
S. Mantelli ◽  
G. Martins ◽  
...  

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
A. de Giorgi ◽  
S. Vogl

Abstract The Kaluza-Klein (KK) decomposition of higher-dimensional gravity gives rise to a tower of KK-gravitons in the effective four-dimensional (4D) theory. Such massive spin-2 fields are known to be connected with unitarity issues and easily lead to a breakdown of the effective theory well below the naive scale of the interaction. However, the breakdown of the effective 4D theory is expected to be controlled by the parameters of the 5D theory. Working in a simplified Randall-Sundrum model we study the matrix elements for matter annihilations into massive gravitons. We find that truncating the KK-tower leads to an early breakdown of perturbative unitarity. However, by considering the full tower we obtain a set of sum rules for the couplings between the different KK-fields that restore unitarity up to the scale of the 5D theory. We prove analytically that these are fulfilled in the model under consideration and present numerical tests of their convergence. This work complements earlier studies that focused on graviton self-interactions and yields additional sum rules that are required if matter fields are incorporated into warped extra-dimensions.


2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Liming Xiao ◽  
Mingkun Li

AbstractIn this paper, we study the initial boundary value problem for a class of higher-order n-dimensional nonlinear pseudo-parabolic equations which do not have positive energy and come from the soil mechanics, the heat conduction, and the nonlinear optics. By the mountain pass theorem we first prove the existence of nonzero weak solution to the static problem, which is the important basis of evolution problem, then based on the method of potential well we prove the existence of global weak solution to the evolution problem.


Buildings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 78
Author(s):  
Daria Uspenskaia ◽  
Karl Specht ◽  
Hendrik Kondziella ◽  
Thomas Bruckner

Without decarbonizing cities energy and climate objectives cannot be achieved as cities account for approximately two thirds of energy consumption and emissions. This goal of decarbonizing cities has to be facilitated by promoting net-zero/positive energy buildings and districts and replicating them, driving cities towards sustainability goals. Many projects in smart cities demonstrate novel and groundbreaking low-carbon solutions in demonstration and lighthouse projects. However, as the historical, geographic, political, social and economic context of urban areas vary greatly, it is not always easy to repeat the solution in another city or even district. It is therefore important to look for the opportunities to scale up or repeat successful pilots. The purpose of this paper is to explore common trends in technologies and replication strategies for positive energy buildings or districts in smart city projects, based on the practical experience from a case study in Leipzig—one of the lighthouse cities in the project SPARCS. One of the key findings the paper has proven is the necessity of a profound replication modelling to deepen the understanding of upscaling processes. Three models analyzed in this article are able to provide a multidimensional representation of the solution to be replicated.


2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Justin R. David ◽  
Jyotirmoy Mukherjee

Abstract We show that the entanglement entropy of D = 4 linearized gravitons across a sphere recently computed by Benedetti and Casini coincides with that obtained using the Kaluza-Klein tower of traceless transverse massive spin-2 fields on S1× AdS3. The mass of the constant mode on S1 saturates the Brietenholer-Freedman bound in AdS3. This condition also ensures that the entanglement entropy of higher spins determined from partition functions on the hyperbolic cylinder coincides with their recent conjecture. Starting from the action of the 2-form on S1× AdS5 and fixing gauge, we evaluate the entanglement entropy across a sphere as well as the dimensions of the corresponding twist operator. We demonstrate that the conformal dimensions of the corresponding twist operator agrees with that obtained using the expectation value of the stress tensor on the replica cone. For conformal p-forms in even dimensions it obeys the expected relations with the coefficients determining the 3-point function of the stress tensor of these fields.


Energies ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2833
Author(s):  
Paolo Civiero ◽  
Jordi Pascual ◽  
Joaquim Arcas Abella ◽  
Ander Bilbao Figuero ◽  
Jaume Salom

In this paper, we provide a view of the ongoing PEDRERA project, whose main scope is to design a district simulation model able to set and analyze a reliable prediction of potential business scenarios on large scale retrofitting actions, and to evaluate the overall co-benefits resulting from the renovation process of a cluster of buildings. According to this purpose and to a Positive Energy Districts (PEDs) approach, the model combines systemized data—at both building and district scale—from multiple sources and domains. A sensitive analysis of 200 scenarios provided a quick perception on how results will change once inputs are defined, and how attended results will answer to stakeholders’ requirements. In order to enable a clever input analysis and to appraise wide-ranging ranks of Key Performance Indicators (KPIs) suited to each stakeholder and design phase targets, the model is currently under the implementation in the urbanZEB tool’s web platform.


1991 ◽  
Vol 67 (16) ◽  
pp. 2119-2122 ◽  
Author(s):  
A. Dougan ◽  
L. Mason

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